Saturday

April 19, 2014

April 19, 2014

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**math**

change per year is (8750-23500)/8 = -1843.75 so, what's -1843.75/23500?
*Friday, March 28, 2014 at 12:17am*

**3rd grade math**

if there were x pieces to start, x/5 = 2 x = 10
*Friday, March 28, 2014 at 12:15am*

**Math**

no, 26x^2 ≠ x√26 Whatever made you think so. let x = 4 26(4^2) = 26*16 = 416 xV26 = 4√26 = appr 20.4 is 416 = 20.4 ???? However, you could write 26x^ as (x√26)^2
*Friday, March 28, 2014 at 12:15am*

**Math**

6 bags uses 5 pounds 12 bags uses 10 pounds, or 5 large bags.
*Friday, March 28, 2014 at 12:14am*

**Math**

treat it as two ordered pairs (t, c) where t is temperature and c is consumption so we have (90,220) and (76, 178) slope = (220-178)(/(90-76) = 42/14 = 3 so: c-220 = 3(t-90) c = 3t - 270+220 c = 3t - 50 check: if t = 90, c = 270-50 = 220 if t = 76, c = 228 - 50 = 178
*Friday, March 28, 2014 at 12:11am*

**Math **

Chads buys peanuts in 2 pound bags. How many 2 pound bags of peanut should chad buy so that he can fill the 5/6 pound bags without having any peanuts left over
*Friday, March 28, 2014 at 12:11am*

**3rd grade math**

suppose there are 2 pieces of the cake left over but you dont know how many pieces there were in the whole cake. explain how you could find the number of pieces in the whole cake if taylor told you that 1/5 of the cake was left.
*Friday, March 28, 2014 at 12:06am*

**math**

when u get this answer let me know! i am stuck on the same one!!! but i think that the question should read cut a cake into 8 pieces...
*Friday, March 28, 2014 at 12:05am*

**math**

avg rate of change = (23500 - 8750)/(8 = ...
*Friday, March 28, 2014 at 12:03am*

**Math**

I assume you pick a card, then throw the die primes from 1-10 : 2,3,5,7 , so 4 of them primes on a die: 2 3 5, so 3 of them prob(2 primes) = (4/10)(3/6) = 1/5 prob(not 2 primes) = 4/5 odds in favour of getting two primes = (1/5) : (4/5 = 1 : 4
*Thursday, March 27, 2014 at 11:59pm*

**3rd grade math**

suppose she cut the cake into 8 equal size pieces and 6 people at all the pieces. Explain how they could have divided the pieces so that everyone ate the same amount of cake. You can show your work in a drawing.
*Thursday, March 27, 2014 at 11:56pm*

**2nd question - math help!!**

(x+y)^2-x-y = (x+y)^2 - (x+y) = (x+y)(x + y - 1)
*Thursday, March 27, 2014 at 11:55pm*

**math help!!**

To make it easier to see, let 2x^2 - x = a so you have 2a^2 - 3a - 9 = (a-3)(2a+3) put the original back in = (2x^2 - x - 3)(4x^2 - 2x + 3) = (x + 1)(2x - 3)(4x^2 - 2x + 3)
*Thursday, March 27, 2014 at 11:53pm*

**math**

vehicles lose value over time. A car is purchased for $23 500, but it is worth only $8750 after eight years. What is the average annual rate of change in the value of the car, as a percent?
*Thursday, March 27, 2014 at 11:14pm*

**Math**

a trainer for a professional football team keeps track of the amount of water players consume throughout practice. the trainer observes that the amount of water consumed is a linear function of the temperature on a given day. the trainer finds that when its 90 degrees the ...
*Thursday, March 27, 2014 at 11:11pm*

**math**

vehicles lose value over time. A car is purchased for $23 500, but it is worth only $8750 after eight years. What is the average annual rate of change in the value of the car, as a percent?
*Thursday, March 27, 2014 at 11:09pm*

**Math**

You're welcome.
*Thursday, March 27, 2014 at 10:59pm*

**math**

37.5 * 0.08 = $3.00 tax (37.5 + 3.00) * 1.18 = _______ total
*Thursday, March 27, 2014 at 10:58pm*

**math**

You're right.
*Thursday, March 27, 2014 at 10:53pm*

**math**

A group of friends went to lunch. The bill, before sales tax and tip, was $37.50 . A sales tax of 8% was added. The group then tipped 18% on the amount after the sales tax was added. What was the amount, in dollars, of the sales tax? What was the total amount the group paid, ...
*Thursday, March 27, 2014 at 10:50pm*

**Math**

THANK YOU!!
*Thursday, March 27, 2014 at 10:50pm*

**math help!! ANYONE?!?!**

someone please help!!!!
*Thursday, March 27, 2014 at 10:49pm*

**math**

I forgot to put the answer which is no
*Thursday, March 27, 2014 at 10:44pm*

**math**

can you produce a 2-digit whole number by multiplying two-digit whole numbers?
*Thursday, March 27, 2014 at 10:42pm*

**Math**

Can 26x^2 be written as x*sqrt26?
*Thursday, March 27, 2014 at 10:42pm*

**Math**

I was wondering if you can help me with math real quickly. I just cant figure this out. For the first question I have to find the surface area for the given cylinder. I have to use 3.14 and round to the nearest whole number. The radius is 6ft and the height is 20 ft. A. 180 ...
*Thursday, March 27, 2014 at 10:37pm*

**Math**

Mr. Garcia pays $834 for some model cars and model planes. Each model car cost $52. and each model plane cost $14. less than each model car. Mr. Garcia buys 3 more planes than cars. How many model planes does he buy?
*Thursday, March 27, 2014 at 10:29pm*

**math help me pleasee!!**

help mee with the two questions, i don't get it and i have a test tomorrow!
*Thursday, March 27, 2014 at 10:27pm*

**math help!!**

okay thankyou so much!! :-)
*Thursday, March 27, 2014 at 10:25pm*

**Math**

5% = 5/100 = 1/20
*Thursday, March 27, 2014 at 10:23pm*

**Math**

2 1/2 hours = 150 minutes (150/3) * 2 = ?
*Thursday, March 27, 2014 at 10:21pm*

**Math**

What is 7 sqrt 8 - 2 sqrt 8?
*Thursday, March 27, 2014 at 10:20pm*

**MATH HELP**

.................| .........(3,2)\..|../ ...............\.|./(s,1) ................\|/ -----------------|------------------- ................/|\ .............../.|.\ .................| .................| In the accompanying figure, the slope of line k is t and the slpe of line...
*Thursday, March 27, 2014 at 10:16pm*

**Math**

There are 120 students trying out for the play. Only 5% of those trying out will have a speaking part. Write this percent as a fraction in its lowest terms.
*Thursday, March 27, 2014 at 10:11pm*

**math help!!**

i also need help with this question factor: (x+y)^2-x-y
*Thursday, March 27, 2014 at 10:10pm*

**Math **

Reggie is a long distance runner. His daily 2-1/2 hour practice is divided evenly into three areas: warm-ups, running, and cool down. How many minutes total does Reggie spend warming up and cooling down each day at practice?
*Thursday, March 27, 2014 at 10:09pm*

**Math**

You have cards numbered 1-10 and a number cube what are the odds of getting two prime numbers? The book says 1\5 but how do they get it.
*Thursday, March 27, 2014 at 10:08pm*

**geometry**

| (3,2)\ | / \ | /(s,1) \|/ -----------------|------------------- /|\ / | \ | | In the accompanying figure, the slope of line k is t and the slpe of line m is negative t. What is the value of s? (the lines are perpendicular) (sorry for the ascii graph ^_^) (I have a test ...
*Thursday, March 27, 2014 at 10:07pm*

**math help!!**

Factor: 2(2x^2-x)^2-3(2x^2-x)-9
*Thursday, March 27, 2014 at 10:06pm*

**math**

Mrs. Jones and Mr. Graham had the same amount of money at first. After Mrs. Jones bought a computer that cost $2,055, she had 1/4 as much money as Mr. Graham. How much money did Mr. Graham have?
*Thursday, March 27, 2014 at 9:54pm*

**Math**

x + 15 + 2x + 27 = 180 3 x = 138 x = 46
*Thursday, March 27, 2014 at 9:38pm*

**math help!!**

[ (x^2+5x) - 6 ] [(x^2+5x) + 6 ] (x^2 + 5 x - 6) (x^2 + 5x + 6) now if the back of your book says (x^2 + 5 x + 6)( x^2 + 5 x - 6) That is the SAME
*Thursday, March 27, 2014 at 9:34pm*

**math help!!**

You got the second one, just reversed x y = y x !
*Thursday, March 27, 2014 at 9:31pm*

**math help**

That is exactly what we got x y = y x the order is just reversed
*Thursday, March 27, 2014 at 9:29pm*

**Math**

If x+15 and 2x+27 represent the number of degrees in measures of two consecutive angles of a parallelogram, find the value of x.
*Thursday, March 27, 2014 at 9:27pm*

**math**

you could do a square with the base as 4 then the height as a 11 then add another figure which has idk because I had that problem
*Thursday, March 27, 2014 at 9:26pm*

**math-still confused**

the answers at the back of the textbook say that the answer is (a-b+c-d)(a-b-c+d) i don't get it :$
*Thursday, March 27, 2014 at 9:22pm*

**math help**

LOL, no need for wolfram !
*Thursday, March 27, 2014 at 9:19pm*

**math help**

remember - -d = + d
*Thursday, March 27, 2014 at 9:19pm*

**math help!!**

factor: (x^2+5x)^2 - 36 and (a-b)^2 - (c-d)^2 show the steps pleasee!
*Thursday, March 27, 2014 at 9:18pm*

**math help**

Wolfram Alpha ^_^
*Thursday, March 27, 2014 at 9:17pm*

**math help**

[ (a-b) - (c-d) ] - [ (a-b) + (c-d) ] [ a - b - c + d ] [ a - b + c - d ]
*Thursday, March 27, 2014 at 9:17pm*

**Math**

This doesn't make sense. Please proofread and repost.
*Thursday, March 27, 2014 at 9:15pm*

**math help!**

how did you get that??
*Thursday, March 27, 2014 at 9:14pm*

**Math**

36 / 2.25 = 16 bows 3*2.25 = 6.75 feet will not be used
*Thursday, March 27, 2014 at 9:14pm*

**Math**

cosine law .... 5.4^2 = 6.2^2 + 3.6^2 - 2(6.2)(3.6)cosR cosR = 22.24/44.64 = .4982.. R = 60.1°
*Thursday, March 27, 2014 at 9:12pm*

**Math**

If an orange is twice as many as a pear. How many pears are there?
*Thursday, March 27, 2014 at 9:12pm*

**math help**

(a - b - c + d)(a- b + c - D)
*Thursday, March 27, 2014 at 9:11pm*

**Math**

direct application of the sine law: x/sin41 = 96/sin71 x = 96sin41/sin71 = ....
*Thursday, March 27, 2014 at 9:06pm*

**math help**

factor: (a-b)^2 - (c-d)^2
*Thursday, March 27, 2014 at 9:06pm*

**Math**

Fay is making 13 bows to sell. She has 36 feet of ribbon. If each bow requires 2 1/4 feet of ribbon, how much ribbon will not b used
*Thursday, March 27, 2014 at 9:06pm*

**math**

Multiply: (3/4) * 20 = 60/4 = 15
*Thursday, March 27, 2014 at 8:44pm*

**math**

jared bought a package of pens containing 20 pens. If 3/4 of the pens had black ink, how do you determine the number of pens with black ink?
*Thursday, March 27, 2014 at 8:41pm*

**math help ASAP!!**

m(2m+3n)(m-5n)
*Thursday, March 27, 2014 at 8:36pm*

**math**

450 divided by 14 is 32.14285714285714 or 32 when rounded. It can also be rounded to any other place, depending on what they want.
*Thursday, March 27, 2014 at 8:36pm*

**math**

thankyou!
*Thursday, March 27, 2014 at 8:31pm*

**Math**

in triangle PQR, PQ=5.4, QR=3.6, and PR=6.2. to the nearest tenth, what is m<R?
*Thursday, March 27, 2014 at 8:31pm*

**math**

450 divide 14?
*Thursday, March 27, 2014 at 8:31pm*

**math**

ohh ok thanks! :)
*Thursday, March 27, 2014 at 8:31pm*

**math help ASAP!!**

factor: 2m^3 - 7m^2n - 15mn^2
*Thursday, March 27, 2014 at 8:29pm*

**Math**

In triangle ABC, m<A=71, m<C=41, and BC=96. To the nearest tenth, what is AB?
*Thursday, March 27, 2014 at 8:28pm*

**math**

Yes !!! You got it. even the -1 * -1 = + 1 part
*Thursday, March 27, 2014 at 8:28pm*

**math**

You're welcome.
*Thursday, March 27, 2014 at 8:27pm*

**math**

Multiply: 0.04 * 350 = ?
*Thursday, March 27, 2014 at 8:26pm*

**Math**

7 14 21 28 35 42 49 56 63 70
*Thursday, March 27, 2014 at 8:25pm*

**math**

P = (Po*r*t)/(1-(1+r)^-t) Po = Initial principal = $199,000 r = (7.01%/12)/100% = 0.00584 = Monthly % rate expressed as a decimal. t = 25yrs * 12mo/yr. = 300 Months. Plug the above values into the given Eq. and get: P = $422,328.10 Int.(Tot.) = P-Po = $223,328.10 Monthly ...
*Thursday, March 27, 2014 at 8:23pm*

**math**

What is 4% of 350??
*Thursday, March 27, 2014 at 8:22pm*

**Math**

Write the multiples of 7 through 70:
*Thursday, March 27, 2014 at 8:22pm*

**math**

sorry about the caps, was doing tax returns with caps lock on
*Thursday, March 27, 2014 at 8:21pm*

**math**

yOU HAVE [X - [Y-Z) ] THAT IS [ X - Y - NEGATIVE Z ] - A NEGATIVE IS POSITIVE [ X -Y PLUS Z ]
*Thursday, March 27, 2014 at 8:20pm*

**math**

I got 14%. Is this correct, Ms. Sue?
*Thursday, March 27, 2014 at 8:14pm*

**math check my answer!**

no the answer is -5(2x-y)(2x+y) ^is that right??
*Thursday, March 27, 2014 at 8:10pm*

**math**

is it -20x^2 + 5y^2 = -5(4x^2-y^2)
*Thursday, March 27, 2014 at 8:08pm*

**math**

factor: -20x^2 + 5y^2
*Thursday, March 27, 2014 at 8:07pm*

**5th Grade Math**

No. Since he played half as many games, I'd predict he'd win half as many as he did for the first round.
*Thursday, March 27, 2014 at 8:05pm*

**math**

Sorry, Ms. Sue, I did not read it carefully.
*Thursday, March 27, 2014 at 8:04pm*

**math**

Thank you so much ! :)
*Thursday, March 27, 2014 at 8:03pm*

**math**

Go with Ms. Sue, I was typing, and didn't see hers. Just ignore my answer.
*Thursday, March 27, 2014 at 8:03pm*

**math**

No, Brady. Your answer is wrong.
*Thursday, March 27, 2014 at 8:03pm*

**math**

25 times 0.92 is 23 So, 0.92 is the answer.
*Thursday, March 27, 2014 at 8:01pm*

**math**

Do this problem the same way I showed you for the last problem.
*Thursday, March 27, 2014 at 8:01pm*

**math**

23/25 = 0.92 = 92%
*Thursday, March 27, 2014 at 7:59pm*

**math**

They could be either 5 by 5 or 15 by 15.
*Thursday, March 27, 2014 at 7:58pm*

**math**

What percent of 600 is 84?
*Thursday, March 27, 2014 at 7:58pm*

** math**

What percent of 25 is 23?
*Thursday, March 27, 2014 at 7:57pm*

**5th Grade Math**

8 games
*Thursday, March 27, 2014 at 7:55pm*

**math**

I have a flat piece of plywood that measures 45 inches in width and 75 inches in length. I want to cut the board into identical square pieces with the integer side lengths and use the entire piece of wood. What are the dimensions (width & length) of each identical piece? ...
*Thursday, March 27, 2014 at 7:54pm*

**5th Grade Math**

Since he won 12 out of 20 in his first games, how many games do you think he'll win in the next 10 games?
*Thursday, March 27, 2014 at 7:43pm*

**5th Grade Math**

Keith played some games of chess at a tournament. He recorded the results of the games on the table shown. Game Results: Number of Games TIES 4 WINS 12 Losses 4 If Keith plays 10 more games, how many of the 10 games is he likely to win? A. 6 games B. 8 games C. 4 games D. 2 games
*Thursday, March 27, 2014 at 7:36pm*

**5th grade math**

20/100 = 1/5
*Thursday, March 27, 2014 at 7:36pm*

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