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<rss version="2.0"><channel><title>Recent Questions in category Math &amp; Algebra</title><link>http://www.tutoranswer.com:8080</link><description>50 Recent Questions from TutorAnswer.com in category Math &amp; Algebra</description><pubDate>Sun, 20 May 2012 16:12:56 +0000</pubDate><item><title>how to solve this problem ?</title><link>http://www.tutoranswer.com:8080/Math-Algebra/how-to-solve-this-problem/_400</link><description>If (x-a) is a factor of the polynomial x³-ax²+a-1,find 'a'</description><pubDate>Sun, 20 May 2012 16:11:05 +0000</pubDate><guid>http://www.tutoranswer.com:8080/Math-Algebra/how-to-solve-this-problem/_400</guid></item><item><title>please help me solve this fraction! ?</title><link>http://www.tutoranswer.com:8080/Math-Algebra/please-help-me-solve-this-fraction/_399</link><description>A man spends 7/15 of his income at home,1/6 of his income on holidays and saves the rest. is he saves 22000 a year,what is his income?
</description><pubDate>Sun, 20 May 2012 07:49:33 +0000</pubDate><guid>http://www.tutoranswer.com:8080/Math-Algebra/please-help-me-solve-this-fraction/_399</guid></item><item><title>(10x)20 ?</title><link>http://www.tutoranswer.com:8080/Math-Algebra/10x20/_398</link><description>Hellppp please  [:-sweat] </description><pubDate>Sat, 19 May 2012 14:17:07 +0000</pubDate><guid>http://www.tutoranswer.com:8080/Math-Algebra/10x20/_398</guid></item><item><title>about polynomials ?</title><link>http://www.tutoranswer.com:8080/Math-Algebra/about-polynomials/_397</link><description>Add the following: (9.8x^2 – 2.2x – 7.8) + (-4.9x^2 – 1.1x + 7)</description><pubDate>Fri, 18 May 2012 02:39:17 +0000</pubDate><guid>http://www.tutoranswer.com:8080/Math-Algebra/about-polynomials/_397</guid></item><item><title>how long will it take to earn $586.75 in interest if $2500 is invested at a 6.5% annual interest rate?</title><link>http://www.tutoranswer.com:8080/Math-Algebra/how-long-will-it-take-to-earn-675-in-interest-if-00-is-invested-at-a-65-annual-interest-rate/_396</link><description></description><pubDate>Thu, 17 May 2012 22:15:38 +0000</pubDate><guid>http://www.tutoranswer.com:8080/Math-Algebra/how-long-will-it-take-to-earn-675-in-interest-if-00-is-invested-at-a-65-annual-interest-rate/_396</guid></item><item><title>A cylindrical container has a radius of 6 cm.  The container is holding 255 cm cubed of water.  Rounded to the nearest quarter inch, what is the minimum height of the container?</title><link>http://www.tutoranswer.com:8080/Math-Algebra/A-cylindrical-container-has-a-radius-of-6-cm-The-container-is-holding-255-cm-cubed-of-water-Rounded-to-the-nearest-quarter-inch-what-is-the-minimum-height-of-the-container/_392</link><description></description><pubDate>Tue, 15 May 2012 20:42:17 +0000</pubDate><guid>http://www.tutoranswer.com:8080/Math-Algebra/A-cylindrical-container-has-a-radius-of-6-cm-The-container-is-holding-255-cm-cubed-of-water-Rounded-to-the-nearest-quarter-inch-what-is-the-minimum-height-of-the-container/_392</guid></item><item><title>what is the fraction nation for the ratio 0.6 to 0.7 ?</title><link>http://www.tutoranswer.com:8080/Math-Algebra/what-is-the-fraction-nation-for-the-ratio-06-to-07/_391</link><description></description><pubDate>Tue, 15 May 2012 00:48:24 +0000</pubDate><guid>http://www.tutoranswer.com:8080/Math-Algebra/what-is-the-fraction-nation-for-the-ratio-06-to-07/_391</guid></item><item><title>Solve this quadratic equation ?</title><link>http://www.tutoranswer.com:8080/Math-Algebra/Solve-this-quadratic-equation/_389</link><description>A=300L-L^2 (A= area of a rectangular paddock)(L=length)

Find:

Area

Turning Point

Dimensions of the paddock
</description><pubDate>Mon, 14 May 2012 12:14:54 +0000</pubDate><guid>http://www.tutoranswer.com:8080/Math-Algebra/Solve-this-quadratic-equation/_389</guid></item><item><title>How to solve this Quadratic Equation ?</title><link>http://www.tutoranswer.com:8080/Math-Algebra/How-to-solve-this-Quadratic-Equation/_388</link><description>N=-0.5h^2-40h+450

Find value of h, the x-ints, y-ints and turning point?</description><pubDate>Mon, 14 May 2012 12:00:19 +0000</pubDate><guid>http://www.tutoranswer.com:8080/Math-Algebra/How-to-solve-this-Quadratic-Equation/_388</guid></item><item><title>Solve this problem IN ROOTS NOT DECIMALS HELLLP ?</title><link>http://www.tutoranswer.com:8080/Math-Algebra/Solve-this-problem-IN-ROOTS-NOT-DECIMALS-HELLLP/_387</link><description>88+40root7 / 8+8root7</description><pubDate>Sun, 13 May 2012 23:14:50 +0000</pubDate><guid>http://www.tutoranswer.com:8080/Math-Algebra/Solve-this-problem-IN-ROOTS-NOT-DECIMALS-HELLLP/_387</guid></item><item><title>mr lim packed one quarter of his orangers into bags of 8.he packed half of the orangers into bag of 5.he had 11 more bags of 5 than bags of 8.how many orangers does he have if he had less than 200 orangers?</title><link>http://www.tutoranswer.com:8080/Math-Algebra/mr-lim-packed-one-quarter-of-his-orangers-into-bags-of-8he-packed-half-of-the-orangers-into-bag-of-5he-had-11-more-bags-of-5-than-bags-of-8how-many-orangers-does-he-have-if-he-had-less-than-200-orangers/_386</link><description></description><pubDate>Sun, 13 May 2012 09:28:12 +0000</pubDate><guid>http://www.tutoranswer.com:8080/Math-Algebra/mr-lim-packed-one-quarter-of-his-orangers-into-bags-of-8he-packed-half-of-the-orangers-into-bag-of-5he-had-11-more-bags-of-5-than-bags-of-8how-many-orangers-does-he-have-if-he-had-less-than-200-orangers/_386</guid></item><item><title>Math ?</title><link>http://www.tutoranswer.com:8080/Math-Algebra/Math/_374</link><description>Two models of a small appliance for household cleaning- Regular(X) and Deluxe (Y)- are produced by a consumer products company. The linear programming model below was used to determine the production schedule. The formulation is as follows:&#13;
&#13;
Maximize profit = 50X+60 Y&#13;
&#13;
Subject to:  8X+10Y= 800  (labor hours)&#13;
X+Y=120 ( total units demanded)&#13;
4X+5Y=500 (raw materials)&#13;
All variables = 0&#13;
&#13;
A.	What is the optimal solution?&#13;
B.	How many units of the regular model would be produced based on this solution? &#13;
</description><pubDate>Tue, 01 May 2012 20:10:09 +0000</pubDate><guid>http://www.tutoranswer.com:8080/Math-Algebra/Math/_374</guid></item><item><title>how do i do this? please explain ?</title><link>http://www.tutoranswer.com:8080/Math-Algebra/how-do-i-do-this-please-explain/_371</link><description>http://www.tutoranswer.com:8080/datastore/photos/photo_4f9f2eaf4b70a.png[/image] </description><pubDate>Tue, 01 May 2012 00:31:35 +0000</pubDate><guid>http://www.tutoranswer.com:8080/Math-Algebra/how-do-i-do-this-please-explain/_371</guid></item><item><title>Find fraction notation for each ratio. You need not simplify.  0.4 to 12 ?</title><link>http://www.tutoranswer.com:8080/Math-Algebra/Find-fraction-notation-for-each-ratio-You-need-not-simplify-04-to-12/_366</link><description>Find fraction notation for each ratio. You need not simplify. 0.4 to 12&#13;
</description><pubDate>Sat, 21 Apr 2012 01:25:19 +0000</pubDate><guid>http://www.tutoranswer.com:8080/Math-Algebra/Find-fraction-notation-for-each-ratio-You-need-not-simplify-04-to-12/_366</guid></item><item><title>I need help to do this complicated Quadratic Equation Question ?</title><link>http://www.tutoranswer.com:8080/Math-Algebra/I-need-help-to-do-this-complicated-Quadratic-Equation-Question/_362</link><description>never mind</description><pubDate>Mon, 16 Apr 2012 09:13:33 +0000</pubDate><guid>http://www.tutoranswer.com:8080/Math-Algebra/I-need-help-to-do-this-complicated-Quadratic-Equation-Question/_362</guid></item><item><title>i need help with algebra homework ?</title><link>http://www.tutoranswer.com:8080/Math-Algebra/i-need-help-with-algebra-homework/_361</link><description>is this totally free?</description><pubDate>Mon, 16 Apr 2012 00:46:49 +0000</pubDate><guid>http://www.tutoranswer.com:8080/Math-Algebra/i-need-help-with-algebra-homework/_361</guid></item><item><title>A jaguar is 80 inches. A jaguar mascot is 7 feet. Is the mascot longer or shorter than a real jaguar?</title><link>http://www.tutoranswer.com:8080/Math-Algebra/A-jaguar-is-80-inches-A-jaguar-mascot-is-7-feet-Is-the-mascot-longer-or-shorter-than-a-real-jaguar/_359</link><description> [:(]  [&gt;:(] </description><pubDate>Thu, 12 Apr 2012 20:39:31 +0000</pubDate><guid>http://www.tutoranswer.com:8080/Math-Algebra/A-jaguar-is-80-inches-A-jaguar-mascot-is-7-feet-Is-the-mascot-longer-or-shorter-than-a-real-jaguar/_359</guid></item><item><title>one forth y for y equals 16 ?</title><link>http://www.tutoranswer.com:8080/Math-Algebra/one-forth-y-for-y-equals-16/_357</link><description>one forth y for y equals 16




</description><pubDate>Sat, 07 Apr 2012 04:24:42 +0000</pubDate><guid>http://www.tutoranswer.com:8080/Math-Algebra/one-forth-y-for-y-equals-16/_357</guid></item><item><title>Calculus Help!Thanks ?</title><link>http://www.tutoranswer.com:8080/Math-Algebra/Calculus-HelpThanks/_355</link><description>Consider the function f(x)=7/x^2-3/x^5. Let F(x) be the antiderivative of f(x) with F(1)=0. Then F(x)=?&#13;
 </description><pubDate>Fri, 30 Mar 2012 15:54:01 +0000</pubDate><guid>http://www.tutoranswer.com:8080/Math-Algebra/Calculus-HelpThanks/_355</guid></item><item><title>Calculus Help Please Thanks! ?</title><link>http://www.tutoranswer.com:8080/Math-Algebra/Calculus-Help-Please-Thanks/_354</link><description>Let F(x)=7/x^2-3/x^5 be the antiderivative of f(x) with F(1)=0. Then F(x)=</description><pubDate>Thu, 29 Mar 2012 23:15:20 +0000</pubDate><guid>http://www.tutoranswer.com:8080/Math-Algebra/Calculus-Help-Please-Thanks/_354</guid></item><item><title>Can you help me with this hard question? Well.. not that hard. Now look at and answer the question.ANSWER IT TODAY! ?</title><link>http://www.tutoranswer.com:8080/Math-Algebra/Can-you-help-me-with-this-hard-question-Well-not-that-hard-Now-look-at-and-answer-the-questionANSWER-IT-TODAY/_348</link><description>Suppose you want to buy 3 CDs for $18.95 each. Should you make a safe estimate or an ordinary estimate to find out if you have enough money? What would be a good estimate of how much money you will need? If you have $55, do you have enough money? [:-sweat] </description><pubDate>Thu, 01 Mar 2012 00:13:32 +0000</pubDate><guid>http://www.tutoranswer.com:8080/Math-Algebra/Can-you-help-me-with-this-hard-question-Well-not-that-hard-Now-look-at-and-answer-the-questionANSWER-IT-TODAY/_348</guid></item><item><title>can anyone help me with 19 problems ...idk how plz help?</title><link>http://www.tutoranswer.com:8080/Math-Algebra/can-anyone-help-me-with-19-problems-idk-how-plz-help/_347</link><description> [:(]  i need a turtor by tonight ...its about square roots and such. im in the 11th grade..and dying need for help :(</description><pubDate>Wed, 29 Feb 2012 02:13:58 +0000</pubDate><guid>http://www.tutoranswer.com:8080/Math-Algebra/can-anyone-help-me-with-19-problems-idk-how-plz-help/_347</guid></item><item><title>Please Explain why a regular polygon with n sides whose vertices are n equally spaced points on the unit circle has an area n/2sin2pi/n ?</title><link>http://www.tutoranswer.com:8080/Math-Algebra/Please-Explain-why-a-regular-polygon-with-n-sides-whose-vertices-are-n-equally-spaced-points-on-the-unit-circle-has-an-area-n/2sin2pi/n/_344</link><description></description><pubDate>Thu, 23 Feb 2012 23:16:42 +0000</pubDate><guid>http://www.tutoranswer.com:8080/Math-Algebra/Please-Explain-why-a-regular-polygon-with-n-sides-whose-vertices-are-n-equally-spaced-points-on-the-unit-circle-has-an-area-n/2sin2pi/n/_344</guid></item><item><title>four solutions to x+y=2 ?</title><link>http://www.tutoranswer.com:8080/Math-Algebra/four-solutions-to-xy2/_340</link><description></description><pubDate>Fri, 17 Feb 2012 04:37:41 +0000</pubDate><guid>http://www.tutoranswer.com:8080/Math-Algebra/four-solutions-to-xy2/_340</guid></item><item><title>what is 4-2?</title><link>http://www.tutoranswer.com:8080/Math-Algebra/what-is-4-2/_338</link><description></description><pubDate>Thu, 16 Feb 2012 00:52:33 +0000</pubDate><guid>http://www.tutoranswer.com:8080/Math-Algebra/what-is-4-2/_338</guid></item><item><title>sam had 9 sweaters. if he wore one a day for a week, how many permutations are possible?</title><link>http://www.tutoranswer.com:8080/Math-Algebra/sam-had-9-sweaters-if-he-wore-one-a-day-for-a-week-how-many-permutations-are-possible/_336</link><description></description><pubDate>Sun, 12 Feb 2012 23:19:18 +0000</pubDate><guid>http://www.tutoranswer.com:8080/Math-Algebra/sam-had-9-sweaters-if-he-wore-one-a-day-for-a-week-how-many-permutations-are-possible/_336</guid></item><item><title>simplify (150)1/2(m9n10)1/4 ?</title><link>http://www.tutoranswer.com:8080/Math-Algebra/simplify-1501/2m9n101/4/_334</link><description></description><pubDate>Sat, 28 Jan 2012 15:39:13 +0000</pubDate><guid>http://www.tutoranswer.com:8080/Math-Algebra/simplify-1501/2m9n101/4/_334</guid></item><item><title>how many liters is 9.25kiloliters?</title><link>http://www.tutoranswer.com:8080/Math-Algebra/how-many-liters-is-925kiloliters/_331</link><description> [8)






























































 </description><pubDate>Mon, 09 Jan 2012 21:47:53 +0000</pubDate><guid>http://www.tutoranswer.com:8080/Math-Algebra/how-many-liters-is-925kiloliters/_331</guid></item><item><title>please answer the question ?</title><link>http://www.tutoranswer.com:8080/Math-Algebra/please-answer-the-question/_328</link><description>In 2005, power-plant employees built the world’s largest igloo in&#13;
Quebec, Canada. The igloo is approximately in the shape of a half sphere and has&#13;
a volume of about 1728π cubic feet. What is the igloo’s approximate diameter?&#13;
(Hint: The formula for the volume of a sphere is V = 4/3 πr3.)</description><pubDate>Tue, 20 Dec 2011 00:07:21 +0000</pubDate><guid>http://www.tutoranswer.com:8080/Math-Algebra/please-answer-the-question/_328</guid></item><item><title>please answer problem ?</title><link>http://www.tutoranswer.com:8080/Math-Algebra/please-answer-problem/_327</link><description>In 2005, power-plant employees built the world’s largest igloo in&#13;
Quebec, Canada. The igloo is approximately in the shape of a half sphere and has&#13;
a volume of about 1728π cubic feet. What is the igloo’s approximate diameter?&#13;
(Hint: The formula for the volume of a sphere is V = 4/3 πr3.)</description><pubDate>Tue, 20 Dec 2011 00:01:07 +0000</pubDate><guid>http://www.tutoranswer.com:8080/Math-Algebra/please-answer-problem/_327</guid></item><item><title>word problem ?</title><link>http://www.tutoranswer.com:8080/Math-Algebra/word-problem/_325</link><description>two buses leave a depot at the same time, one traveling north and the other south. the speed of the northbound bus is 15 mi/h greater than the speed of the southbound bus. After 3 hours on the road, the buses are 255 miles apart. What are there speeds?</description><pubDate>Wed, 14 Dec 2011 00:03:44 +0000</pubDate><guid>http://www.tutoranswer.com:8080/Math-Algebra/word-problem/_325</guid></item><item><title>if a geraf runs 5/4 the speed of a zebra and a zebra and a zebra runs 50 mph how fast does a geraif run ?</title><link>http://www.tutoranswer.com:8080/Math-Algebra/if-a-geraf-runs-5/4-the-speed-of-a-zebra-and-a-zebra-and-a-zebra-runs-50-mph-how-fast-does-a-geraif-run/_315</link><description></description><pubDate>Tue, 29 Nov 2011 22:51:55 +0000</pubDate><guid>http://www.tutoranswer.com:8080/Math-Algebra/if-a-geraf-runs-5/4-the-speed-of-a-zebra-and-a-zebra-and-a-zebra-runs-50-mph-how-fast-does-a-geraif-run/_315</guid></item><item><title>if a geraf runs 5/4 the speed of a zebra and a zebra and a zebra runs 50 mph how fast does a geraif run ?</title><link>http://www.tutoranswer.com:8080/Math-Algebra/if-a-geraf-runs-5/4-the-speed-of-a-zebra-and-a-zebra-and-a-zebra-runs-50-mph-how-fast-does-a-geraif-run/_314</link><description></description><pubDate>Tue, 29 Nov 2011 22:50:56 +0000</pubDate><guid>http://www.tutoranswer.com:8080/Math-Algebra/if-a-geraf-runs-5/4-the-speed-of-a-zebra-and-a-zebra-and-a-zebra-runs-50-mph-how-fast-does-a-geraif-run/_314</guid></item><item><title>if a geraf runs 5/4 the speed of a zebra and a zebra and a zebra runs 50 mph how fast does a geraif run ?</title><link>http://www.tutoranswer.com:8080/Math-Algebra/if-a-geraf-runs-5/4-the-speed-of-a-zebra-and-a-zebra-and-a-zebra-runs-50-mph-how-fast-does-a-geraif-run/_313</link><description></description><pubDate>Tue, 29 Nov 2011 22:49:30 +0000</pubDate><guid>http://www.tutoranswer.com:8080/Math-Algebra/if-a-geraf-runs-5/4-the-speed-of-a-zebra-and-a-zebra-and-a-zebra-runs-50-mph-how-fast-does-a-geraif-run/_313</guid></item><item><title>if a geraf runs 5/4 the speed of a zebra and a zebra and a zebra runs 50 mph how fast does a geraif run ?</title><link>http://www.tutoranswer.com:8080/Math-Algebra/if-a-geraf-runs-5/4-the-speed-of-a-zebra-and-a-zebra-and-a-zebra-runs-50-mph-how-fast-does-a-geraif-run/_312</link><description></description><pubDate>Tue, 29 Nov 2011 22:47:55 +0000</pubDate><guid>http://www.tutoranswer.com:8080/Math-Algebra/if-a-geraf-runs-5/4-the-speed-of-a-zebra-and-a-zebra-and-a-zebra-runs-50-mph-how-fast-does-a-geraif-run/_312</guid></item><item><title>Algebra 1 questions?</title><link>http://www.tutoranswer.com:8080/Math-Algebra/Algebra-1-questions/_311</link><description>Can someone please tell me if i got these problems correct? and if not which ones are wrong? Im not asking for the answers.

1.) Simplify the expression: x2-4x+4(x2+2x-5)
Answer: 5x2+ 12x-20

2.) Simplify the expression: 5x2+4x-6(3x2-2)
Answer: -13x2+4x-12

3.) Simplify the expression: x2(4x-x+6)
Answer: 3x2+6

4.) Multiply the binomials: (a+b)(a-b)
Answer: a2-b2

5.) Multiply: (4a+x)(3a-x)
Answer: 12a2+7ax -x2

6.) Multiply: h2(5h+4)
Answer: 5h3+4h2

7.) Multiply: (x+3)2
Answer: x2+9

8.) Multiply: (d-5)2
Answer: d2-25

9.) Multiply: (2x2)(x+4)(x-4)
Answer: 2x4-16

10.) Skip.

11.) To graphically solve the quadratic equation x2+3x-10=5 you?
Answer: use the quadratic formula, letting a= 1, b= 3, c= -15

12.) If the garden box has dimensions x by x feet and an area in square feet equal to the perimeter in feet, what is the value of x that satisfies the requirments?
Answer: there is not enough information in the problem

13.) Given three consecutive integers with a sum of four times the second number, write an algerabic equation for this situation.
Answer: 3n+3=4n

14.) Factor the trinomial: b2-b-6
Answer: (b+3)(b-2)

15.) Factor the binomail: x2-64
Answer: (x-8)(x+8)

16.) Factor the binomial: 9a2-16
Answer: (3a-4)(3a+4)

17.) Factor the equation: x2=x+20
Answer: (x+5)(x+4)

18.) Solve the equation x2+5x-4=0 using the quadratic formula.
Answer: x=.702 and -5.702

19.) Solve the equation 3m2+ 6m=3 using thw quadratic formula.
Answer: x= 2.5 and -14.5

** for questions 20 and 21 write the value of the discriminant of each equation decide how many different real number roots the equation has and determine how many point the parabola will intersect wuth the x-axis do not solve equation.


20.) x2+7x+9=0
Answer: discriminant is 13, there are twl real roots,, with the parabola intersecting the x=acis at two points.

21.) 2x2+5x+7=0
Answer: discriminant is -31, there are no real roots, with the parabola not intersecting the x-axis at all.

Thanks if you help, it would be appreciated Im working on practice tests for my final.</description><pubDate>Tue, 22 Nov 2011 21:44:56 +0000</pubDate><guid>http://www.tutoranswer.com:8080/Math-Algebra/Algebra-1-questions/_311</guid></item><item><title>In an arithmetic sequence, a1 = 17 and d = 10. ?</title><link>http://www.tutoranswer.com:8080/Math-Algebra/In-an-arithmetic-sequence-a1-17-and-d-10/_310</link><description>a. Write a rule for the nth term of the sequence.&#13;
b. Use the rule to find the fourth and eleventh terms</description><pubDate>Tue, 15 Nov 2011 01:42:40 +0000</pubDate><guid>http://www.tutoranswer.com:8080/Math-Algebra/In-an-arithmetic-sequence-a1-17-and-d-10/_310</guid></item><item><title>A student forgets the last two digits of her friend’s phone number.She does remember that the digits are different. What is the probability of guessing the last two digits correctly on the first try ?</title><link>http://www.tutoranswer.com:8080/Math-Algebra/A-student-forgets-the-last-two-digits-of-her-friend%E2%80%99s-phone-numberShe-does-remember-that-the-digits-are-different-What-is-the-probability-of-guessing-the-last-two-digits-correctly-on-the-first-try/_309</link><description>please help</description><pubDate>Tue, 15 Nov 2011 01:35:38 +0000</pubDate><guid>http://www.tutoranswer.com:8080/Math-Algebra/A-student-forgets-the-last-two-digits-of-her-friend%E2%80%99s-phone-numberShe-does-remember-that-the-digits-are-different-What-is-the-probability-of-guessing-the-last-two-digits-correctly-on-the-first-try/_309</guid></item><item><title>answer the problem below ?</title><link>http://www.tutoranswer.com:8080/Math-Algebra/answer-the-problem-below/_308</link><description>Ann-Marie has $2.55 in nickels and dimes. She has $1.80 in dimes. How many&#13;
nickels does Ann-Marie have?&#13;
a. Write an equation to represent the situation.</description><pubDate>Tue, 15 Nov 2011 01:32:29 +0000</pubDate><guid>http://www.tutoranswer.com:8080/Math-Algebra/answer-the-problem-below/_308</guid></item><item><title>simplify the equation below! ?</title><link>http://www.tutoranswer.com:8080/Math-Algebra/simplify-the-equation-below/_307</link><description>[/u]3z^2+2.7z[/u]&#13;
(z + 0.9)(z - 0.9)</description><pubDate>Tue, 15 Nov 2011 01:29:00 +0000</pubDate><guid>http://www.tutoranswer.com:8080/Math-Algebra/simplify-the-equation-below/_307</guid></item><item><title>was math discovered or invented?</title><link>http://www.tutoranswer.com:8080/Math-Algebra/was-math-discovered-or-invented/_306</link><description></description><pubDate>Fri, 04 Nov 2011 01:41:18 +0000</pubDate><guid>http://www.tutoranswer.com:8080/Math-Algebra/was-math-discovered-or-invented/_306</guid></item><item><title>In order to double the volume of water in a fish tank, is it necessary to double the length, width, and height of the tank?</title><link>http://www.tutoranswer.com:8080/Math-Algebra/In-order-to-double-the-volume-of-water-in-a-fish-tank-is-it-necessary-to-double-the-length-width-and-height-of-the-tank/_305</link><description>please help i need to know this [:-unsure] </description><pubDate>Fri, 04 Nov 2011 00:53:03 +0000</pubDate><guid>http://www.tutoranswer.com:8080/Math-Algebra/In-order-to-double-the-volume-of-water-in-a-fish-tank-is-it-necessary-to-double-the-length-width-and-height-of-the-tank/_305</guid></item><item><title>What number contains an integral factor whose sum of two numbers are identical?</title><link>http://www.tutoranswer.com:8080/question/What_number_contains_an_integral_factor_whose_sum_of_two_numbers_are_identical%253F_299</link><description></description><pubDate>Sat, 05 Jun 2010 22:10:21 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/What_number_contains_an_integral_factor_whose_sum_of_two_numbers_are_identical%253F_299</guid></item><item><title>Using the Commutative rule of algebra, write a formula that generalizes the product of numbers</title><link>http://www.tutoranswer.com:8080/question/Using_the_Commutative_rule_of_algebra%252C_write_a_formula_that_generalizes_the_product_of_numbers_293</link><description></description><pubDate>Tue, 01 Jun 2010 17:57:38 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/Using_the_Commutative_rule_of_algebra%252C_write_a_formula_that_generalizes_the_product_of_numbers_293</guid></item><item><title>How to generalize from the product of numbers?</title><link>http://www.tutoranswer.com:8080/question/How_to_generalize_from_the_product_of_numbers%253F_287</link><description></description><pubDate>Tue, 25 May 2010 15:37:45 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/How_to_generalize_from_the_product_of_numbers%253F_287</guid></item><item><title>What numbers are proven to imply an underlying truth of the equation A^2 + B^2 = C^2</title><link>http://www.tutoranswer.com:8080/question/What_numbers_are_proven_to_imply_an_underlying_truth_of_the_equation_A%255E2_%252B_B%255E2_%253D_C%255E2_271</link><description></description><pubDate>Sun, 09 May 2010 00:05:32 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/What_numbers_are_proven_to_imply_an_underlying_truth_of_the_equation_A%255E2_%252B_B%255E2_%253D_C%255E2_271</guid></item><item><title>Rational root of a cubic equation</title><link>http://www.tutoranswer.com:8080/question/Rational_root_of_a_cubic_equation_263</link><description>If (2 + sqrt 3) is an irrational  root of the cubic equation X^3 + AX^2 + BX + C = 0, where A,B,C are rational numbers, show that the given cubic equation will have a rational root as well.</description><pubDate>Fri, 30 Apr 2010 01:37:10 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/Rational_root_of_a_cubic_equation_263</guid></item><item><title>Two easy Algebra problems</title><link>http://www.tutoranswer.com:8080/question/Two_easy_Algebra_problems_262</link><description>1) Consider the cubic equation a1X^3 + a2X^2 + a3X = 0. If the roots of this equation are r1, r2 and r3, Show that r1+r2+r3 = -a1, r1*r2 + r1*r3 + r2*r3 = a2 and r1*r2*r3 = - a3.&#13;
&#13;
2) Show that (2)^(2^5) + 1 is divisible by 641. &#13;
</description><pubDate>Thu, 29 Apr 2010 06:07:12 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/Two_easy_Algebra_problems_262</guid></item><item><title>Trailing zeros in a Factorial</title><link>http://www.tutoranswer.com:8080/question/Trailing_zeros_in_a_Factorial_260</link><description>How many zeros will be trailing factorial 100! ?

That is in the product of 100*99*98*...*4*3*2*1 how many zeros will be at the tail end?

You have to show details of hand calculations. No computer program results will be accepted except for verification of your hand calculations. Good Luck. R.B.</description><pubDate>Mon, 26 Apr 2010 03:22:57 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/Trailing_zeros_in_a_Factorial_260</guid></item><item><title>A three digit number</title><link>http://www.tutoranswer.com:8080/question/A_three_digit_number_257</link><description>Find a three digit number such that when raised to power 2, 3, 4, and all  other integral powers, the products will end up with the original three digits. For example, if the three digits are 456, then all integral powers of 456 should end up with 456. (HINT: There are only two sets of three digit numbers having the specified property). Good luck. R.B.&#13;
 </description><pubDate>Fri, 23 Apr 2010 02:03:07 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/A_three_digit_number_257</guid></item><item><title>My Recent Problems</title><link>http://www.tutoranswer.com:8080/question/My_Recent_Problems_255</link><description>Recently, during the current month,  I have posted the following 4 algebra questions:

1- A factoring problem
2- Simplifying algebraic expression
3- A divisibility problem
4- A tricky algebra question

Any participant who answers 3 of the above 4 questions correctly within 10 days from today, 04/20/2010, I will send him a very good book of algebra as my present. Thank you all. Professor R.B.</description><pubDate>Tue, 20 Apr 2010 18:45:24 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/My_Recent_Problems_255</guid></item><item><title>A tricky Algebra question</title><link>http://www.tutoranswer.com:8080/question/A_tricky_Algebra_question_254</link><description>Which number is bigger, 1000^1000 or 1001^999 ?</description><pubDate>Tue, 20 Apr 2010 18:30:30 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/A_tricky_Algebra_question_254</guid></item><item><title>Simplifying Algebraic Expression</title><link>http://www.tutoranswer.com:8080/question/Simplifying_Algebraic_Expression_253</link><description>Prove that if A + B + C = 0, then:&#13;
&#13;
A^3 + B^3 + C^3 = 3ABC. </description><pubDate>Tue, 20 Apr 2010 16:05:13 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/Simplifying_Algebraic_Expression_253</guid></item><item><title>A new geometry problem</title><link>http://www.tutoranswer.com:8080/question/A_new_geometry_problem_252</link><description>a square piece of cardboard 1 foot on each side, a topless box is to be formed by cutting out from each corner a square with sides (a), then bending the flaps to get the box. for what value of (a) the box will have the greatest volume? </description><pubDate>Tue, 20 Apr 2010 01:00:27 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/A_new_geometry_problem_252</guid></item><item><title>A Divisibility Problem</title><link>http://www.tutoranswer.com:8080/question/A_Divisibility_Problem_251</link><description>Prove that (a + b + c)^333 - a^333 - b^333 - c^333&#13;
 &#13;
is divisible by  (a + b + c)^3  - a^3 - b^3 - c^3.  </description><pubDate>Tue, 20 Apr 2010 00:24:51 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/A_Divisibility_Problem_251</guid></item><item><title>a factoring problem</title><link>http://www.tutoranswer.com:8080/question/a_factoring_problem_250</link><description>Factor the following problem:&#13;
&#13;
(a + b + c)^3 -a^3 - b^3 - c^3</description><pubDate>Tue, 20 Apr 2010 00:19:26 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/a_factoring_problem_250</guid></item><item><title>An amount of $4200 is deposited to a bank with annual interest of 5% compounded daily.  What is the amount after 6 months?</title><link>http://www.tutoranswer.com:8080/question/An_amount_of_%25244200_is_deposited_to_a_bank_with_annual_interest_of_5%2525_compounded_daily.__What_is_the_amount_after_6_months%253F_249</link><description></description><pubDate>Mon, 19 Apr 2010 07:48:57 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/An_amount_of_%25244200_is_deposited_to_a_bank_with_annual_interest_of_5%2525_compounded_daily.__What_is_the_amount_after_6_months%253F_249</guid></item><item><title>Find the inverse of f(x) = 2x - 3 / x + 1</title><link>http://www.tutoranswer.com:8080/question/Find_the_inverse_of_f%2528x%2529_%253D_2x_-_3_%252F_x_%252B_1_248</link><description></description><pubDate>Mon, 19 Apr 2010 07:44:55 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/Find_the_inverse_of_f%2528x%2529_%253D_2x_-_3_%252F_x_%252B_1_248</guid></item><item><title>How many layers are there in half a roll of toilet paper</title><link>http://www.tutoranswer.com:8080/question/How_many_layers_are_there_in_half_a_roll_of_toilet_paper_247</link><description>Using the data from the previous "toilet paper" problem, calculate how many layers or circles it takes to equal half of the length of the roll. That is how many layers must be removed from a full roll so that the length removed equals the length remaining.</description><pubDate>Sun, 18 Apr 2010 23:31:06 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/How_many_layers_are_there_in_half_a_roll_of_toilet_paper_247</guid></item><item><title>How long is a roll of toilet paper</title><link>http://www.tutoranswer.com:8080/question/How_long_is_a_roll_of_toilet_paper_245</link><description>A roll of toilet paper is wound on a central spool that is 1.5" in diameter. The double ply sheets are are .025 inches thick. The roll of toilet paper has a diameter of 5.5".&#13;
Assume the roll is circular. How long is the roll of toilet paper.&#13;
&#13;
This can be a very serious matter when the roll is down to 1.6" in diameter.</description><pubDate>Sat, 17 Apr 2010 17:46:15 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/How_long_is_a_roll_of_toilet_paper_245</guid></item><item><title>Easy Algebra problem</title><link>http://www.tutoranswer.com:8080/question/Easy_Algebra_problem_236</link><description>If you find my previous problem of "CAR RACING PROBLEM" a little difficult, here is an easy one:&#13;
&#13;
1) B + D = 3C &#13;
&#13;
2) D = 3A + C&#13;
&#13;
3) 3B = C + A&#13;
&#13;
FIND D IN TERMS OF A.</description><pubDate>Thu, 15 Apr 2010 06:03:04 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/Easy_Algebra_problem_236</guid></item><item><title>Diluting alcohol solution</title><link>http://www.tutoranswer.com:8080/question/Diluting_alcohol_solution_230</link><description>I need to make 240 mL. of solution that contains 20% of alcohol. How many mL. of 70% alcohol do I need to use?</description><pubDate>Sat, 10 Apr 2010 15:16:52 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/Diluting_alcohol_solution_230</guid></item><item><title>I would like to challenge anyone who can provide me with a thorough answer? Write a formula that can cube any number based on the binomial theorem (a + b)^n</title><link>http://www.tutoranswer.com:8080/question/I_would_like_to_challenge_anyone_who_can_provide_me_with_a_thorough_answer%253F_Write_a_formula_that_can_cube_any_number_based_on_the_binomial_theorem_%2528a_%252B_b%2529%255En_224</link><description>Anyone who answers this is in my book a true mathematician.</description><pubDate>Sun, 04 Apr 2010 05:49:20 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/I_would_like_to_challenge_anyone_who_can_provide_me_with_a_thorough_answer%253F_Write_a_formula_that_can_cube_any_number_based_on_the_binomial_theorem_%2528a_%252B_b%2529%255En_224</guid></item><item><title>questions about log</title><link>http://www.tutoranswer.com:8080/question/questions_about_log_222</link><description>(1)  solve for x: log8 x=4/3      (log to the base 8)&#13;
&#13;
(2) 2log4(5x)=3    (log to base 4)&#13;
&#13;
(3)  log72401-log3243   (log base 7 and log base 3)</description><pubDate>Fri, 26 Mar 2010 17:48:24 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/questions_about_log_222</guid></item><item><title>Algebra question</title><link>http://www.tutoranswer.com:8080/question/Algebra_question_220</link><description>To catch a frisbee, a dog leaps into the air with an initial velocity of 14 feet per second.&#13;
A. Write a model for the height of the dog above the ground.&#13;
B. After how many seconds does the dog land on the ground?&#13;
</description><pubDate>Sun, 21 Mar 2010 22:13:07 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/Algebra_question_220</guid></item><item><title>oh Algebra question</title><link>http://www.tutoranswer.com:8080/question/oh_Algebra_question_219</link><description>To catch a frisbee, a dog leaps into the air with an initial velocity of 14 feet per second.&#13;
A. Write a model for the height of the dog above the ground.&#13;
B. After how many seconds does the dog land on the ground?&#13;
</description><pubDate>Sun, 21 Mar 2010 22:12:59 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/oh_Algebra_question_219</guid></item><item><title>Can Anyone please help me with these math questions? thanks so much !!!!!</title><link>http://www.tutoranswer.com:8080/question/Can_Anyone_please_help_me_with_these_math_questions%253F_thanks_so_much_%2521%2521%2521%2521%2521_218</link><description>Evaluate &#13;
2.)17Â°&#13;
4.)2.67 ^1&#13;
10.)a^0,aâ‰ 0&#13;
12.) (7x-ã€–45),ã€—^0 for x=8&#13;
&#13;
Write an equivalent expression with positive exponents. Then simplify, if possible.&#13;
26.) 5^(-6)&#13;
34.) r/( t^(-7) )&#13;
42.)(ã€–x/3)ã€—^(-4)&#13;
&#13;
&#13;
Convert each number to sciencetific notation.&#13;
2.) 4,900,000,000,000&#13;
4.)168,000,000,000,000&#13;
6.)0.000000000865&#13;
8.)0.00000000002&#13;
&#13;
Convert the number in each sentence to scientific notation.&#13;
12.) Nascar. Total revenue of NASCAR (National association of stock Car Auto Racing) is expected to be $3423 million by 2006.</description><pubDate>Sat, 13 Mar 2010 03:55:50 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/Can_Anyone_please_help_me_with_these_math_questions%253F_thanks_so_much_%2521%2521%2521%2521%2521_218</guid></item><item><title>Solve for s?</title><link>http://www.tutoranswer.com:8080/question/Solve_for_s%253F_217</link><description>Ned paid $32, before tax, for a shirt that cost $18 and a pair of shorts that were on sale for 20% off the original price. The equation 18+(s-0.20s)=32 represents the situation, where s is the original price of the shorts. What was the original price of the short? </description><pubDate>Wed, 10 Mar 2010 01:28:55 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/Solve_for_s%253F_217</guid></item><item><title>Math</title><link>http://www.tutoranswer.com:8080/question/Math_215</link><description>given the function g(x) = /2x-3/, determine  g(0) + 2  </description><pubDate>Sat, 06 Mar 2010 22:02:31 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/Math_215</guid></item><item><title>Math</title><link>http://www.tutoranswer.com:8080/question/Math_214</link><description>The average cost for a hamburger platter at Joe's  Palace is %9.25.  The manager wants to keep the price for the hamburger platter within $1.05 of the current price as he plans a new menu.  Write an absolute value inequality that he can use to model the price for his new menu. Then solve the inequality for the range of acceptable charges he can list for the hamburger platter.  </description><pubDate>Sat, 06 Mar 2010 22:00:13 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/Math_214</guid></item><item><title>Math help me please</title><link>http://www.tutoranswer.com:8080/question/Math_help_me_please_205</link><description>I'm graphing a rational function. f(x) = (3x^2 + x - 4) / (2x^2 - 5x). The x-intercept is -4/3. The vertical asymptotes are x=0 and 5/2. Now my problem is I need to plot points between and beyond x-intercept and vertical asymptotes. What points do I choose from the graph. Hard to find out. Please help. Thank you.</description><pubDate>Fri, 26 Feb 2010 03:10:54 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/Math_help_me_please_205</guid></item><item><title>Stuck on these problems can any please help?</title><link>http://www.tutoranswer.com:8080/question/Stuck_on_these_problems_can_any_please_help%253F_204</link><description>Translate to an equation and solve.&#13;
&#13;
100% of 13 is what?&#13;
&#13;
 what is 4% of $45?&#13;
&#13;
What percent of $50 is $40?&#13;
&#13;
57 is 20% of what?&#13;
&#13;
 100% of what is $74?&#13;
&#13;
70% of what is 35?&#13;
&#13;
 what is 9.2% of $5600?&#13;
&#13;
</description><pubDate>Thu, 25 Feb 2010 21:35:48 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/Stuck_on_these_problems_can_any_please_help%253F_204</guid></item><item><title>What are the next 2 terms in this series</title><link>http://www.tutoranswer.com:8080/question/What_are_the_next_2_terms_in_this_series_197</link><description>This is old and fairly easy when you think about it.&#13;
&#13;
For the series : O, T, T, F, F, S, S , ? ,? what are the next 2 terms shown by the ?\'s</description><pubDate>Fri, 19 Feb 2010 23:08:34 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/What_are_the_next_2_terms_in_this_series_197</guid></item><item><title>not understanding these word problems needs extra help.Thanks Alot...</title><link>http://www.tutoranswer.com:8080/question/not_understanding_these_word_problems_needs_extra_help.Thanks_Alot..._194</link><description>In a class of 40 students, on average, 6 will be left â€“ handed .If a class includes 9 â€œlefties,â€ how many students would you estimate are in class?&#13;
&#13;
 Waterproofing. Bonnie can water proof 450 ftã€–ftã€—^2 of decking with 2 gal of sealant. How many gallons should bonnie buy for a 1200-ã€–ftã€—^2 deck?&#13;
&#13;
 Coffee Production. Coffee beans from 14 trees are required to produce the 17 lb of coffee that the average person in the United States drinks each year. How many trees are required to produce 375 lb of coffee?&#13;
&#13;
 &#13;
Snow to Water. Under typical conditions,1 1/2 ft of snow will melt to 2 in. Of water. To how many inches of water will 5 1/2 ft of snow melt?&#13;
&#13;
&#13;
 Estimating a Trout population. To determine the number of trout in a lake, a conservationist catches 112 trout, tags them, and throws them back into the lake. Later, 82 trout are caught, and it is found that 32 of them are tagged. Estimate how many trout there are in the lake &#13;
&#13;
 &#13;
&#13;
Map Scaling. On a map, 1/4 in. Represents 50 mi. If two citi</description><pubDate>Thu, 18 Feb 2010 22:26:04 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/not_understanding_these_word_problems_needs_extra_help.Thanks_Alot..._194</guid></item><item><title>help please thanks .</title><link>http://www.tutoranswer.com:8080/question/help_please_thanks_._193</link><description>The leaning tower of Pisa. At the time of this writing the leaning tower of Pisa is still standing. It is 184.5 ft tall but leans about 17 ft out from its base. What is the ratio of the distance it leans to its height? Its height to the distance it leans?&#13;
&#13;
&#13;
&#13;
Find the ratio of the first number to the second and simplify.&#13;
28 to36&#13;
&#13;
&#13;
&#13;
&#13;
The ratio of Americans Ages 18-24 living with their parents to all Americans aged 18-24 is 54 to 100. Write the ratio of those living with parents to those living apart from parents as a simplified fraction.&#13;
&#13;
&#13;
&#13;
&#13;
Write each ratio in simplified form.&#13;
 6 3/10  to 1 4/5&#13;
</description><pubDate>Thu, 18 Feb 2010 20:16:31 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/help_please_thanks_._193</guid></item><item><title>math trouble</title><link>http://www.tutoranswer.com:8080/question/math_trouble_192</link><description>Find fraction notation for the ratio. You need not simplify.&#13;
&#13;
 329 to 967&#13;
&#13;
 0.6 to 0.7&#13;
&#13;
 10 1/2  to 43 1/4&#13;
</description><pubDate>Thu, 18 Feb 2010 19:33:00 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/math_trouble_192</guid></item><item><title>can you please help?</title><link>http://www.tutoranswer.com:8080/question/can_you_please_help%253F_189</link><description>A student eats 3 hamburgers in 15 min. What is the rate in hamburgers per minute? In minutes per hamburger?&#13;
&#13;
&#13;
The heart of a human, at rest, will beat an average of 4200 beats in 60 min. What is the rate in beats per minute?&#13;
&#13;
The continent of Australia, with the island state of Tasmania, has an area of 2,967,893 sq mi and a population of 19,913,144 people. What is the rate of number of people per square mile? The rate per square mile is called the population density. Australia has one of the lowest population densities in the world.</description><pubDate>Thu, 18 Feb 2010 03:29:41 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/can_you_please_help%253F_189</guid></item><item><title>What is the next term in the series?</title><link>http://www.tutoranswer.com:8080/question/What_is_the_next_term_in_the_series%253F_185</link><description>The following is a series:&#13;
A/(BCD) ; (EFH)/G ; ( IKL)/J ; (MN)/(OP) ; What is the next term in the series using QRST and why? what term would be represented UVWXYZ?</description><pubDate>Wed, 17 Feb 2010 15:39:04 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/What_is_the_next_term_in_the_series%253F_185</guid></item><item><title>How much will they cost?</title><link>http://www.tutoranswer.com:8080/question/How_much_will_they_cost%253F_183</link><description>You go into a hardware store and buy 7 for $3, 49 for $6, 343 for $9. How much will 6058 cost?</description><pubDate>Tue, 16 Feb 2010 18:07:50 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/How_much_will_they_cost%253F_183</guid></item><item><title>Shop Numbers on a street</title><link>http://www.tutoranswer.com:8080/question/Shop_Numbers_on_a_street_182</link><description>Consider the following set of shop numbers on one side of a city street:&#13;
&#13;
2, 4, 6, â€¦., y, y+2, y+4, â€¦â€¦, x. Where x is the last shop number on the street and y is a  restaurant number (in seventies). Find x and y, if the sum of all shop numbers up to (but not including y) is equal to the sum of all other numbers from y to x. &#13;
&#13;
Hope you will like this problem.</description><pubDate>Mon, 15 Feb 2010 20:00:11 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/Shop_Numbers_on_a_street_182</guid></item><item><title>What is 245 million written in scientific notation?</title><link>http://www.tutoranswer.com:8080/question/What_is_245_million_written_in_scientific_notation%253F_175</link><description>How do u write this number in scientific notation?</description><pubDate>Thu, 11 Feb 2010 00:07:07 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/What_is_245_million_written_in_scientific_notation%253F_175</guid></item><item><title>Triangle problem</title><link>http://www.tutoranswer.com:8080/question/Triangle_problem_174</link><description>Here is a geometric problem for advanced K-12 students:

The area of a  triangle ABC is 48 m^2, with two sides AB = 10m, and AC = 12 m. Find the third side BC. We know that the third side is a whole number.</description><pubDate>Wed, 10 Feb 2010 23:42:40 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/Triangle_problem_174</guid></item><item><title>Factoring Algebraic Expressions</title><link>http://www.tutoranswer.com:8080/question/Factoring_Algebraic_Expressions_173</link><description>Polynomials and Factoring&#13;
&#13;
I will ask you three algebraic expression to be factorized. It will be useful to review binomial, trinomial, quadratic and cuing relationships such as :&#13;
(x+y)(x-y) = â€¦&#13;
(x +y)^2 = â€¦&#13;
(x - y)^2 = â€¦&#13;
(x+ y)^3 = â€¦&#13;
x^3 + y^3 = â€¦, etc&#13;
Now, factorize the following 3 problems, showing the methods used, for the benefit of other students who need to learn factoring procedures.&#13;
&#13;
1) 20 Z^2 - 53 ZX + 18 X^2&#13;
&#13;
2) 216 P^3 + 125 Q^3&#13;
&#13;
3) 6X^2 + 7X = 3 &#13;
</description><pubDate>Tue, 09 Feb 2010 20:39:54 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/Factoring_Algebraic_Expressions_173</guid></item><item><title>need help with problem</title><link>http://www.tutoranswer.com:8080/question/need_help_with_problem_172</link><description>Use graph of f to find each indicated function value. y=f(x). The graph is looped. f(-2), the answer is -4 but the book doesn't help me in how it got the answer.&#13;
Identifying intercepts&#13;
missing function value f(-2)</description><pubDate>Mon, 08 Feb 2010 00:40:13 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/need_help_with_problem_172</guid></item><item><title>three meat mincing machines</title><link>http://www.tutoranswer.com:8080/question/three_meat_mincing_machines_171</link><description>A butcher has three mincing machines, A,  B, C, and a box of meat. &#13;
Machines B + C can mince the meat in 36 minutes,&#13;
Machines A + C can mince the meat in 60 minutes, and&#13;
Machines A + B can mince the meat in 30 minutes.&#13;
If all three machines work together, what will be the required time?  &#13;
 </description><pubDate>Thu, 04 Feb 2010 06:49:44 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/three_meat_mincing_machines_171</guid></item><item><title>Debate over what this forum is for</title><link>http://www.tutoranswer.com:8080/question/Debate_over_what_this_forum_is_for_170</link><description>I saw a thread where a couple of people were talking about what this board is for.&#13;
Some of the tutors ask questions because they honestly don't know how to solve&#13;
certain problems and some of the students answer other students' questions who&#13;
are at a lower level of mathematics. And apparently, some of the tutors are asking&#13;
questions to challenge students to answer them. This is a good idea but the kids&#13;
are generally here to have their own questions answered not answer other questions.&#13;
If you post a brain teaser and you don't want a "tutor" to answer it, you should say so&#13;
but tutors are probably the most likely to be able to answer because they find it&#13;
challenging and have developed the critical thinking skills required to do so.&#13;
&#13;
But math is a huge subject. I am a tutor and there are questions here I haven't&#13;
been able to answer. I still consider myself a student of mathematics and will&#13;
continue to be until the day I die. Matherapist, I did just post an answer to your&#13;
Super Bee question but i</description><pubDate>Wed, 03 Feb 2010 20:36:25 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/Debate_over_what_this_forum_is_for_170</guid></item><item><title>How far did super bee fly?</title><link>http://www.tutoranswer.com:8080/question/How_far_did_super_bee_fly%253F_169</link><description>Train A travelling at 50mph and train B travelling at 40mph are approaching each other on the same track due to a switching error. When the trains are 540 miles apart, super bee, resting on the cowcatcher of train A decides to fly up the track towards train B at an average velocity of 350mph. When super bee sees his reflection in the cowcatcher of train B, he does a quick about face and flies back down the track towards trainA at the same average speed. This scenario is repeated ad nauseum until the trains crash, and the last thing going through super bees mind is his rear end. &#13;
&#13;
How far did super bee fly?</description><pubDate>Tue, 02 Feb 2010 21:18:34 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/How_far_did_super_bee_fly%253F_169</guid></item><item><title>Fermat\'s last theorem</title><link>http://www.tutoranswer.com:8080/question/Fermat%2527s_last_theorem_168</link><description>Fermat's last theorem claims that A^n + B^n = c^n has no solution if n is bigger than 2. &#13;
A student claims that he has proved 681^11 + 309^11 = 876^11.&#13;
Could you convince the student that he is wrong? Using a hand calculator only if need be. &#13;
</description><pubDate>Tue, 02 Feb 2010 19:47:54 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/Fermat%2527s_last_theorem_168</guid></item><item><title>Rotating tires during a trip</title><link>http://www.tutoranswer.com:8080/question/Rotating_tires_during_a_trip_167</link><description>If I go on a 4600 miles trip, and rotate tires using my spare tire such that at the end of my trip all five tires use the same number of miles, what will be the miles for each tire?</description><pubDate>Mon, 01 Feb 2010 21:09:58 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/Rotating_tires_during_a_trip_167</guid></item><item><title>Reposting Math story problem</title><link>http://www.tutoranswer.com:8080/question/Reposting_Math_story_problem_164</link><description>Please explain and solve. Thank you.
A rain gutter is made from sheets of aluminum that are 20 inches wide. Determine the depth of the gutter that will allow a cross-sectional area of 13 square inches. Show that there are 2 different solutions to the problem. Round to the nearest tenth of an inch.
x(20+2x)= 13.</description><pubDate>Sat, 30 Jan 2010 15:41:39 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/Reposting_Math_story_problem_164</guid></item><item><title>Math story problem need help with.</title><link>http://www.tutoranswer.com:8080/question/Math_story_problem_need_help_with._162</link><description>Please explain and solve. Thank you.
A rain gutter is made from sheets of aluminum that are 20 inches wide. Determine the depth of the gutter that will allow a cross-sectional area of 13 square inches. Show that there are 2 different solutions to the problem. Round to the nearest tenth of an inch.
2(20+2x)= 13.</description><pubDate>Fri, 29 Jan 2010 21:55:28 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/Math_story_problem_need_help_with._162</guid></item><item><title>math questions</title><link>http://www.tutoranswer.com:8080/question/math_questions_158</link><description>convert to fraction notation .&#13;
8 1/2&#13;
&#13;
8 1/10&#13;
&#13;
-8 7/8&#13;
&#13;
convert to a mixed numeral.&#13;
19/8&#13;
&#13;
65/8&#13;
&#13;
-57/6&#13;
&#13;
Divide. write a mixed numeral for the answer.&#13;
3/2126&#13;
&#13;
542/(-25)&#13;
&#13;
</description><pubDate>Tue, 26 Jan 2010 03:15:26 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/math_questions_158</guid></item><item><title>math question</title><link>http://www.tutoranswer.com:8080/question/math_question_157</link><description>FInd the LCM&#13;
&#13;
6ab^2  ,9a^3 b &#13;
x^(2  ) z^(3 ),x^3 y ,y^2 z&#13;
</description><pubDate>Mon, 25 Jan 2010 18:19:01 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/math_question_157</guid></item><item><title>math</title><link>http://www.tutoranswer.com:8080/question/math_156</link><description>I had 14 cats in the beginning but 1/2 are missing, how many cats do I have left?</description><pubDate>Sat, 23 Jan 2010 07:56:15 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/math_156</guid></item><item><title>solve</title><link>http://www.tutoranswer.com:8080/question/solve_155</link><description>How many syringes, each containing 3/5 mL, can a clinical pharmacist fill from a 30 -mL via?</description><pubDate>Sat, 23 Jan 2010 02:54:46 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/solve_155</guid></item><item><title>solve</title><link>http://www.tutoranswer.com:8080/question/solve_154</link><description>40.)Moviegoers. Of every 1000 people who attend movies 340 are in the 18-24 age group .what is the ratio of moviegoers in the 18-24 age group to all moviegoers?&#13;
&#13;
46.) .) The pitch of a screw is 3/(32 ) in. How far will it come out of a piece of plywood when it is turned 10 complete rotations counterclockwise? &#13;
&#13;
52.) According to a recent survey,7/10 of Americans eat sandwiches for lunch, and 1/3 of these eat fast food sandwiches .What fractions of Americans eat fast food sandwiches for lunch?</description><pubDate>Fri, 22 Jan 2010 23:22:43 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/solve_154</guid></item><item><title>solve</title><link>http://www.tutoranswer.com:8080/question/solve_153</link><description>46.) The pitch of a screw is 3/(32 ) in. How far will it come out of a piece of plywood when it is turned 10 complete rotations counterclockwise? &#13;
&#13;
52.) According to a recent survey,7/10 of Americans eat sandwiches for lunch, and 1/3 of these eat fast food sandwiches .What fractions of Americans eat fast food sandwiches for lunch?&#13;
&#13;
62.) 18yd and 18yd &#13;
&#13;
64.) 17/5 km and 4km&#13;
&#13;
is 24 prime composite or neither ?</description><pubDate>Fri, 22 Jan 2010 22:00:02 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/solve_153</guid></item><item><title>Use = or â‰  for âˆŽto write a true sentence.</title><link>http://www.tutoranswer.com:8080/question/Use_%253D_or_%25C3%25A2%25E2%2580%25B0%25C2%25A0_for_%25C3%25A2%25CB%2586%25C5%25BDto_write_a_true_sentence._152</link><description>Use = or â‰  for âˆŽto write a true sentence.&#13;
&#13;
&#13;
64.) -2/9      -8/36 &#13;
&#13;
66.) -8/7     -16/14&#13;
&#13;
70.) 425/165      130/66&#13;
&#13;
&#13;
is 31 a prime number composite or neither ?</description><pubDate>Fri, 22 Jan 2010 20:18:13 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/Use_%253D_or_%25C3%25A2%25E2%2580%25B0%25C2%25A0_for_%25C3%25A2%25CB%2586%25C5%25BDto_write_a_true_sentence._152</guid></item><item><title>find a equivalent expression for each number,using the denominator indicated .use multiplication by 1</title><link>http://www.tutoranswer.com:8080/question/find_a_equivalent_expression_for_each_number%252Cusing_the_denominator_indicated_.use_multiplication_by_1_150</link><description>8.) 5/3= ?/-18&#13;
&#13;
16.) -10/21 =?/126&#13;
&#13;
&#13;
simplify.&#13;
&#13;
34.) 30/40&#13;
&#13;
44.) 117/91&#13;
&#13;
54.) -19x/38xy</description><pubDate>Fri, 22 Jan 2010 03:28:12 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/find_a_equivalent_expression_for_each_number%252Cusing_the_denominator_indicated_.use_multiplication_by_1_150</guid></item><item><title>A basement floor is being carpeted. An area 7/8 of the length and 3/4 of the width is covered by lunch time. What fraction of the floor has been completed?</title><link>http://www.tutoranswer.com:8080/question/A_basement_floor_is_being_carpeted._An_area_7%252F8_of_the_length_and_3%252F4_of_the_width_is_covered_by_lunch_time._What_fraction_of_the_floor_has_been_completed%253F_149</link><description>prealgebra</description><pubDate>Fri, 22 Jan 2010 02:57:01 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/A_basement_floor_is_being_carpeted._An_area_7%252F8_of_the_length_and_3%252F4_of_the_width_is_covered_by_lunch_time._What_fraction_of_the_floor_has_been_completed%253F_149</guid></item><item><title>derivatives</title><link>http://www.tutoranswer.com:8080/question/derivatives_148</link><description>how to calculate partial derivatives, first degree for &#13;
&#13;
f(x,y) = x^2 + 2xy - y^2</description><pubDate>Thu, 21 Jan 2010 12:06:20 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/derivatives_148</guid></item><item><title>TWO ALGEBRA PROBLEMS</title><link>http://www.tutoranswer.com:8080/question/TWO_ALGEBRA_PROBLEMS_147</link><description>The sum of the digits of a two digit number is 12.  The number formed by reversing the digits is 36 more than the original number.  Find the original number.&#13;
&#13;
===========================&#13;
&#13;
 T +U = 12  &#13;
&#13;
10U + T= 36 + 10T + U &#13;
</description><pubDate>Wed, 20 Jan 2010 13:14:24 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/TWO_ALGEBRA_PROBLEMS_147</guid></item><item><title>Find four solutions of this equation? (pre algebra)</title><link>http://www.tutoranswer.com:8080/question/Find_four_solutions_of_this_equation%253F_%2528pre_algebra%2529_146</link><description>i have to find four solutions of this equation and write them as ordered pairs&#13;
&#13;
the equations is x=4 and 2x-4y=8</description><pubDate>Tue, 19 Jan 2010 23:42:44 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/Find_four_solutions_of_this_equation%253F_%2528pre_algebra%2529_146</guid></item><item><title>how many bananas?</title><link>http://www.tutoranswer.com:8080/question/how_many_bananas%253F_145</link><description>Please solve the following problem in an analytic manner. I can solve it by trial and error.&#13;
&#13;
Three men and a monkey live in a treehouse on an island. The men find a nice ripe bunch of bananas but it takes them all day to get up the tree and bring them down. So they decide to go to sleep and divide up the bananas in the morning.&#13;
&#13;
During the night the first man wakes up while the others sleep, looks at the bananas, and decides to take his 1/3 of the bunch. Since the bunch didn\'t divide evenly he gave the extra banana to the monkey. After he fell asleep the second man woke up in the same way and took his third, giving the extra banana to the monkey. Finally the third man woke up and did the same, taking a third of the bananas in the bunch and since it didn\'t divide evenly into three\'s he gave the extra banana to the monkey.&#13;
&#13;
The next morning the men woke up and divided up what was left into three piles, giving the extra banana to the monkey.&#13;
&#13;
What is the least number of bananas that could be in</description><pubDate>Tue, 19 Jan 2010 18:10:47 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/how_many_bananas%253F_145</guid></item><item><title>How many integers greater than 99 and less than 1000 have at least one digit that is a zero?</title><link>http://www.tutoranswer.com:8080/question/How_many_integers_greater_than_99_and_less_than_1000_have_at_least_one_digit_that_is_a_zero%253F_144</link><description>How many integers greater than 99 and less than 1000 have at least one digit that is a zero?&#13;
The anwer is 171 but I don\'t understand how they got it. Thank you. RevDrBob@aol.com</description><pubDate>Mon, 18 Jan 2010 15:01:04 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/How_many_integers_greater_than_99_and_less_than_1000_have_at_least_one_digit_that_is_a_zero%253F_144</guid></item><item><title>CHALLENGE!</title><link>http://www.tutoranswer.com:8080/question/CHALLENGE%2521_143</link><description>we know that:&#13;
a) 1+2+3+...+n=[n(n+1)/2]&#13;
b) 1^2+2^2+3^2+...+n^2=&#13;
     [n(n+1)(2n+1)/6]&#13;
c) 1^3+2^3+3^3+...+n^3=&#13;
    [n(n+1)/2]^2 &#13;
All for n=1,2,3,4,5,.......etc&#13;
Now, find:&#13;
&#13;
d) 1^4+2^4+3^4+...+n^4=?&#13;
&#13;
If you solve this problem correctly, I wiil tell you how to get a $20.00 prize. Send your address to me via email to: rajbaba2152@aol.com. Good Luck!</description><pubDate>Mon, 18 Jan 2010 05:40:50 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/CHALLENGE%2521_143</guid></item><item><title>Math expression needs to be solved.</title><link>http://www.tutoranswer.com:8080/question/Math_expression_needs_to_be_solved._139</link><description>3/(2x+4) + 2/(3x+6)</description><pubDate>Fri, 15 Jan 2010 17:50:10 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/Math_expression_needs_to_be_solved._139</guid></item><item><title>farmer\'s egg problem</title><link>http://www.tutoranswer.com:8080/question/farmer%2527s_egg_problem_138</link><description>A farmer took a basket of eggs to sell, a horse rider hit the basket and broke all eggs, then he told the farmer how many eggs you had in the basket, I will pay for them. The farmer said: I don't know exactly, but when I was taking the eggs out of my basket two by two, the last one was one egg, when I took them 3 at a time, again one was left, same thing happened when I took them out 4 at a time, 5 at a time, 6 at a time, but when I took them out 7 at a time, nothing was left in the basket.&#13;
Can you tell the minimum number of eggs in the basket?   </description><pubDate>Fri, 15 Jan 2010 01:40:58 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/farmer%2527s_egg_problem_138</guid></item><item><title>How does one thank a reply?</title><link>http://www.tutoranswer.com:8080/question/How_does_one_thank_a_reply%253F_137</link><description>How does one thank a reply? The email addresses are not sufficient, i.e., is it yahoo,com, aol.com, ... ? </description><pubDate>Thu, 14 Jan 2010 17:15:45 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/How_does_one_thank_a_reply%253F_137</guid></item><item><title>if x/y = 3/4  and x/z = 1/8, then y/z =?</title><link>http://www.tutoranswer.com:8080/question/if_x%252Fy_%253D_3%252F4__and_x%252Fz_%253D_1%252F8%252C_then_y%252Fz_%253D%253F_136</link><description>if x/y = 3/4  and x/z = 1/8, then y/z =?&#13;
&#13;
I solved for y and got (4/3)x&#13;
I solved for z and got 8x or 8(4/3) = 32/3&#13;
When I solve for y/z,  which is   (4/3) / (32/3) , I get 1/8&#13;
But the answer is supposed to be 1/6&#13;
I have done this so often that I now have a mental block.</description><pubDate>Thu, 14 Jan 2010 16:27:17 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/if_x%252Fy_%253D_3%252F4__and_x%252Fz_%253D_1%252F8%252C_then_y%252Fz_%253D%253F_136</guid></item><item><title>IF 10 and 6 are factors of n, then 10 x 6 is a factor of n ... .</title><link>http://www.tutoranswer.com:8080/question/IF_10_and_6_are_factors_of_n%252C_then_10_x_6_is_a_factor_of_n_..._._135</link><description>IF 10 and 6 are factors of n, then 10 x 6 is a factor of n..&#13;
&#13;
What is one possible value for n between 1 and 100 that proves the statement above is false?&#13;
(The answer is \\\"30 or 90\\\".)&#13;
I can sense why the answer is so but don\\\'t know how to explain it.&#13;
Can you walk me through it?</description><pubDate>Thu, 14 Jan 2010 15:59:19 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/IF_10_and_6_are_factors_of_n%252C_then_10_x_6_is_a_factor_of_n_..._._135</guid></item><item><title>two questions about logs in Math - I know the answers but not the process</title><link>http://www.tutoranswer.com:8080/question/two_questions_about_logs_in_Math_-_I_know_the_answers_but_not_the_process_133</link><description>I know the answers to the following two problems re logs but I don\'t know the procedure.&#13;
Please explain steps. Thank you.&#13;
&#13;
 log sub 3 (81)^-2.3= -9.2 (Why?)&#13;
 &#13;
                   sq rt 2&#13;
log sub 2  ------- = - 5/2   (Why?)&#13;
                       8</description><pubDate>Tue, 12 Jan 2010 03:56:57 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/two_questions_about_logs_in_Math_-_I_know_the_answers_but_not_the_process_133</guid></item><item><title>Fruit Problem</title><link>http://www.tutoranswer.com:8080/question/Fruit_Problem_121</link><description>A farmer is selling 515 pieces of fruit for $150.00,&#13;
each apple costs 10 cents, each peach costs 50 cents and each pine apple costs 100 cents. find the number of each kind of fruit. </description><pubDate>Sun, 03 Jan 2010 01:18:34 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/Fruit_Problem_121</guid></item><item><title>$150.00 in coins</title><link>http://www.tutoranswer.com:8080/question/%2524150.00_in_coins_117</link><description>A kid accumulated $150.00 in 150 coins consisting of dimes, half dollars, and silver dollars only. Find the minimum number of silver dollar  coins.</description><pubDate>Sat, 02 Jan 2010 04:30:07 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/%2524150.00_in_coins_117</guid></item><item><title>$150.00 in coins</title><link>http://www.tutoranswer.com:8080/question/%2524150.00_in_coins_116</link><description>A kid accumulated $150.00 in 150 coins consisting of dimes, half dollars, and silver dollars only. Find the minimum number of silver dollar coins.</description><pubDate>Sat, 02 Jan 2010 04:30:03 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/%2524150.00_in_coins_116</guid></item><item><title>I have Two Congruence Problems</title><link>http://www.tutoranswer.com:8080/question/I_have_Two_Congruence_Problems_112</link><description>The following two problems can be solved using Congruence:&#13;
&#13;
1- What is the remainder when 3^666,666 is divided by 7?&#13;
&#13;
2- Prove that integer 5 will divide &#13;
3^[(3n+1)] + 2^(n+1) for any positive integer value of n.</description><pubDate>Sun, 27 Dec 2009 20:09:44 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/I_have_Two_Congruence_Problems_112</guid></item><item><title>I have a question about integers</title><link>http://www.tutoranswer.com:8080/question/I_have_a_question_about_integers_111</link><description>find three positive integers A, B, C, whose sum is 38 and whose product is 1768.</description><pubDate>Sun, 27 Dec 2009 18:27:04 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/I_have_a_question_about_integers_111</guid></item><item><title>I have a question about divisibility</title><link>http://www.tutoranswer.com:8080/question/I_have_a_question_about_divisibility_110</link><description>Find all two digit numbers that are divisible by the product of their digits. For example, 24 is divisible by 2x4=8.there are many more two digit numbers. Find them.</description><pubDate>Sun, 27 Dec 2009 01:50:05 +0000</pubDate><guid>http://www.tutoranswer.com:8080/question/I_have_a_question_about_divisibility_110</guid></item><item><title>I need an answer given by MFB13</title><link>http://www.tutoranswer.com:8080/question/I_need_an_answer_given_by_MFB13_107</link><description>In your example of (3y^3x^4 + yx) you were supposed to find a value for dy/dx.&#13;
your answer does not show it. your answer should have been as:&#13;
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&#13;
How to work these problems:&#13;
&#13;
(+5)(+3) =+15&#13;
(-5)(-7) =+35&#13;
Also, How to find the product of more than two numbers:&#13;
(+2)(-5)(+3)(-3) =&#13;
Do I go by the order of operations? &#13;
Thank you for any help.&#13;
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