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April 20, 2014

Homework Help: Math

Branches of Math

Recent Math Questions

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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

5th grade math
Samara keeps her collection of hair bows in a box. She has 20 white bows, 20 red bows, 15 yellow bows, 25 green bows, and 20 pink bows. If she pulls out 1 bow at random, what is the probability the bow will be yellow? Can someone show me how to work this problem out?
Thursday, March 27, 2014 at 7:23pm

math i don"t get it
why does (y-z) turn to (y+z) ??
Thursday, March 27, 2014 at 7:18pm

math
x^2-(y - z)^2 exactly the same way let a = x let b = y-z now you have a^2-b^2 = (a-b)(a+b) so [x -(y-z) ] [ x + (y-z) ] (x-y+z)(x+y-z) you were close
Thursday, March 27, 2014 at 7:08pm

math-help!!
oh okay thats for the first question i think but what about this question x^2-(y - z)^2 ??
Thursday, March 27, 2014 at 7:04pm

math
let x = (a-b) let y = c then you have x^2 - y^2 = (x-y)(x+y) now put in (a-b) for x and put in c for y
Thursday, March 27, 2014 at 7:00pm

math-help me please!!
^is that right??
Thursday, March 27, 2014 at 6:59pm

math
is the answer x^2 - (y - z)^2 = [x- (y-z)] [ x+ (y-z)] = (x-y-z) (x+y-z)
Thursday, March 27, 2014 at 6:56pm

math
so how do i do x^2 - (y - z)^2
Thursday, March 27, 2014 at 6:54pm

math
recall that x^2-y^2 = (x-y)(x+y) so, substitute in x = a-b and y=c.
Thursday, March 27, 2014 at 6:52pm

MATH WORD PROBLEM
b+c = 420 so c = 420 - b c = (3/4) b so 3 b/4 = 420 - b 3 b = 1680 - 4 b 7 b = 1680 b = 240 bears total b = sb + bb but bb = (9/7)sb so 240 = sb +(9/7) sb = (16/7)sb sb = 105 small bears bb = 240 - 105 = 136 big bears I will leave the last part for you
Thursday, March 27, 2014 at 6:51pm

Math
30
Thursday, March 27, 2014 at 6:48pm

math
how do you factor: (a - b)^2 - c^2
Thursday, March 27, 2014 at 6:47pm

math
y = 3x-1 is probably the simplest, but it could also be y = 2x+7 y = 23 y = (1+∛x)^3 - 4 or lots of other possibilities. There are infinitely many relations which will take 8 to 23.
Thursday, March 27, 2014 at 6:38pm

math
What is the rule if 8 is the input and 23 is the output
Thursday, March 27, 2014 at 6:32pm

MATH WORD PROBLEM
Diego works at a toy store. His boss tells him to order 420 stuffed bears and toy cars. He must order 4 stuffed bears for every 3 toy cars. a) If he must order 9 large stuffed bears for every 7 small stuffed bears, how many of each stuffed bear should he order? b) If Diego ...
Thursday, March 27, 2014 at 6:22pm

Chemistry
Look at your cellulose balance above and see how I did that step by step. 2Fe + O2 ==> 2FeO I don't understand why you have trouble with that. 4Fe + 3O2 ==> 2Fe2O3 This one can be a little trickier but here is how I do it. Fe + O2 ==> Fe2O3 I start a little ...
Thursday, March 27, 2014 at 6:07pm

Math 117
Why is it important to find nonperfect roots in radical form to simplify the process of performing basic operations with radical expression?
Thursday, March 27, 2014 at 5:46pm

math
Meals: 0.75 * 600 = 450 Deserts: 0.625 * 600 = 375 Chairs: 0.6 * 600 = 360
Thursday, March 27, 2014 at 5:41pm

math
A downtown auditorium hosts large events. The auditorium can seat 600 people at one time. The sponsors of an awards dinner are using the auditorium for 450 people. The chef has prepared meals for 3/4 of the usual 600 people. The pastry chef has made enough dessert for 5/8 of ...
Thursday, March 27, 2014 at 5:30pm

Math
I really don't know the answer?
Thursday, March 27, 2014 at 5:28pm

Math
Quack. I'm a sheep
Thursday, March 27, 2014 at 5:23pm

Math
2 5/6
Thursday, March 27, 2014 at 5:22pm

CHEMISTRY
H2S ==> SO2 mols H2S = 20.0g/molar mass = approx 0.6 but you need to do it more accurately. There is 1 mol S in H2S and 1 mol S in SO2; therefore, you should be able to produce 0.6 mols SO2. Then g = mols x molar mass. Remember to do the math yourself because 0.6 is an ...
Thursday, March 27, 2014 at 5:22pm

Math
Figure it out on your own. It will make you smarter and help you learn how to solve this kind of problem.
Thursday, March 27, 2014 at 5:21pm

Math please check my answer?
You are welcome :)
Thursday, March 27, 2014 at 4:56pm

Math please check my answer?
Thank you. :)
Thursday, March 27, 2014 at 4:56pm

Math
4*4
Thursday, March 27, 2014 at 4:54pm

Math please check my answer?
By the way: https://www.wolframalpha.com/input/?i=e^​%28x-4%29-2+
Thursday, March 27, 2014 at 4:54pm

Math
(5+4-1)*3 = 24 (4-3+1)*12 = 24 (9-7)*(10+2) = 24
Thursday, March 27, 2014 at 4:53pm

Math please check my answer?
again it has a horizontal asymptote of y = -2 as x--->-oo but is defined for all real x so yes, range is all real x
Thursday, March 27, 2014 at 4:49pm

Math
None of the functions you have listed seem to have zero denominators. This function has a horizontal asymptote at y = -1 as x --->-oo but is defined for all real x
Thursday, March 27, 2014 at 4:47pm

Math please check my answer?
This is my last question. What is the domain of the function below? f(x)= e^(x-4)-2 I got all real numbers is that correct?
Thursday, March 27, 2014 at 4:41pm

math
There is no sure answer since there is not a constant number of leaves per inch 2/3 = .67 leaves/inch 14/15 = .933 leaves /inch so 6 * .67 = 4.02 6 *.933 = 5.6 leaves per inch so probably more than four and less than 6 try 5 also see: http://www.jiskha.com/display.cgi?id=126&#...
Thursday, March 27, 2014 at 4:38pm

Math
yes, all real numbers again
Thursday, March 27, 2014 at 4:31pm

Math
yes, all real numbers
Thursday, March 27, 2014 at 4:31pm

math
There are 2 leaves along 3 in.of an ivy vine. There are 14 leaves along 15 in. of the same vine. How many leaves are there along 6 in. of the vine?
Thursday, March 27, 2014 at 4:29pm

math
5
Thursday, March 27, 2014 at 4:27pm

Math
I really need help
Thursday, March 27, 2014 at 4:26pm

Math
What is the domain of the function f(x)= x+6? I got -infinity < x < infinity
Thursday, March 27, 2014 at 4:26pm

Math
What is the domain of the function f(x)= -3^(x+3)+4? I got (-infinity, infinity) is that correct?
Thursday, March 27, 2014 at 4:24pm

Math
Try to make 24 using -,+,•,/ 1,5,4,3 & 3,12,4,1 & 10,9,7,2
Thursday, March 27, 2014 at 4:15pm

Math
What is the domain of the function f(x)=2^(x+3)-1? I got (-infinity, infinity) is that correct?
Thursday, March 27, 2014 at 4:00pm

Math
O say can u c
Thursday, March 27, 2014 at 3:49pm

math
To keep his wigwam
Thursday, March 27, 2014 at 3:43pm

Math
How many possible combinations are there if a spinner with 4 sections is spun twice?
Thursday, March 27, 2014 at 3:39pm

Math
nope. You had to add 37x to both sides, so it should be y = 37x + 82
Thursday, March 27, 2014 at 3:26pm

Math
sign error add 37 x to both sides f(x) = 37 x + 82
Thursday, March 27, 2014 at 3:26pm

Math
Rewrite the equation y - 37x = 82 as a function of x. I got f(x)= -37x +82 is that right?
Thursday, March 27, 2014 at 3:23pm

Math
20 - 28 = -8
Thursday, March 27, 2014 at 2:28pm

Math
The weather forecaster says it's 20 degrees Celsius in London but only 28 degrees colder in New York. What is the temperature in New York?
Thursday, March 27, 2014 at 2:26pm

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