Wednesday
April 23, 2014

Homework Help: Math

Branches of Math

Recent Math Questions

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math
x + x+30 = 90 now solve for x
Tuesday, April 8, 2014 at 5:04am

Math
too late for your spelling and punctuation, apparently...
Tuesday, April 8, 2014 at 4:58am

Math
Go to bed it is to late
Tuesday, April 8, 2014 at 4:56am

Math
well, it's clear that if there is 1 bus, the numbers work out: 40+16 = 36+20 If there are more buses, then since LCM(40,36) = 360, any multiple of 360 + 56 will also work, with an extra 9 buses if 40/bus, and an extra 10 buses if 36/bus, for each extra 360 kids.
Tuesday, April 8, 2014 at 4:53am

Math
The teachers in a childcare center are taking their children for a field trip.if each bus takes 40 children, there will be 16 vacant seats. If each bus takes 36 children, 20 children will not get any seats. How many buses are there?
Tuesday, April 8, 2014 at 4:45am

Math
Thanks Steve!
Tuesday, April 8, 2014 at 3:00am

math
Two angles are complementary. One contains 30° more than the other. Find both angles
Tuesday, April 8, 2014 at 1:44am

Math (help)
how to find the surface area of a cone with a diameter of 8 and a slant height of 7? with steps? please
Tuesday, April 8, 2014 at 1:05am

Math
Please help me with the following by checking my answer. The length of the hypotenuse of an isosceles right triangle is √6 inches. How long, in inches, are the legs of the triangle? A. 3 B. 6 C. √3 - (This is my answer.) D. √6 I am not sure on my answer, ...
Tuesday, April 8, 2014 at 12:47am

math
I dont know
Tuesday, April 8, 2014 at 12:32am

math
room: Vr = 11.35*9.5*8.3 = 894.9 box: Vb = 4.25*6.5*4.0 = 110.5 now, subtract and round.
Tuesday, April 8, 2014 at 12:05am

Business math
The Treasury Department auctioned $21 billion in 3-month bills in denominations of $10,000 at a discount rate of 4.965%. What would be the effective rate of interest? (Use calendar year. Do not round intermediate calculations. Round your answer to the nearest hundredth ...
Monday, April 7, 2014 at 11:51pm

Math
Thank you Reiny, I now understand! :)
Monday, April 7, 2014 at 11:42pm

business Math
Please help? The Treasury Department auctioned $21 billion in 3-month bills in denominations of $10,000 at a discount rate of 4.965%. What would be the effective rate of interest? (Use calendar year. Do not round intermediate calculations. Round your answer to the nearest ...
Monday, April 7, 2014 at 11:35pm

Math
white / green = 3/2 w/18 = 3/2 2w = 54 w = 27 check: 27/18 = 3/2
Monday, April 7, 2014 at 11:35pm

business Math
Carl Sonntag wanted to compare what proceeds he would receive with a simple interest note versus a simple discount note. Both had the same terms: $19,500 at 8% for 2 years. Use ordinary interest as needed. a. Calculate the simple interest note proceeds. Can someone help me? ...
Monday, April 7, 2014 at 11:34pm

business Math
You were offered the opportunity to purchase either a simple interest note or a simple discount note with the following terms: $33,353 at 7% for 18 months. a. Calculate the effective interest rate. (Do not round intermediate calculations. Round your final answer to the ...
Monday, April 7, 2014 at 11:33pm

Math
√(2x^2+5)=2 square both sides 2x^2 + 5 = 4 2x^2 = -1 x^2 = -1/2 no solution, since we cannot take the square root of a negative in the real number set.
Monday, April 7, 2014 at 11:33pm

Business Math
Can someone help me with this problem: On September 5, Sheffield Company discounted at Sunshine Bank a $9,000 (maturity value), 120-day note dated June 5. Sunshine’s discount rate was 9%. (Use Days in a year table.) What proceeds did Sheffield Company receive...
Monday, April 7, 2014 at 11:31pm

Math
Their are 18 green blocks in a bag.their are 3 white blocks for every 2green blocks.witch proportion can be used to find w,the total number of white blocks in the bag?
Monday, April 7, 2014 at 11:00pm

Math help
http://www.google.com/webhp?source=searc​h_app#q=surface+area+of+a+cone
Monday, April 7, 2014 at 10:59pm

Math
Please help me with the following by checking it. Solve for x: √(2x^2+5)=2 A. ±1 B. √2 - (This is my answer.) C. ±2 D. None of the above. I am not sure about my answer, can someone check it please. Any help will be greatly appreciated.:)
Monday, April 7, 2014 at 10:55pm

Math help
how to find the surface area of a cone with a diameter of 8 and a slant height of 7?
Monday, April 7, 2014 at 10:49pm

Math help
I got 24,501.42 cubic meters.
Monday, April 7, 2014 at 10:20pm

Math help
okay I figured it out, is it 24513.84? @Ms.Sue
Monday, April 7, 2014 at 10:15pm

Math help
http://www.google.com/webhp?source=searc​h_app#q=volume+cylinder
Monday, April 7, 2014 at 10:02pm

Math help
How do you find the volume of a cylinder with a diameter of 34m and a height of 27m?
Monday, April 7, 2014 at 10:01pm

Math help Please
My willy bird is 6 inches and has a mass, M, of 2.1kg. During penetration, it reaches a force or 15.0 N with a coefficient of friction 0.75. Calculate its rotational velocity given no respect to time. How much work is done in a thirty second period?
Monday, April 7, 2014 at 9:51pm

Math
Dough + Heat = Cookie
Monday, April 7, 2014 at 9:49pm

math
a storage room measures 11.35 feet in length by 9.5 feet in width by 8.3 feet in height. it contains a box which is 4.25 feet in length 6.5 feet in width and 4.0 feet in height.how many cubic feet of storage space are left in the room rounded to the nearest cubic foot
Monday, April 7, 2014 at 9:49pm

Math
Atta go :) You are welcome.
Monday, April 7, 2014 at 9:42pm

Math
If hannah 2/3 of a quart of milk and sh used half the answer is 2/6 or simplified 1/3
Monday, April 7, 2014 at 9:31pm

Math
Monique is making cookies for the pajama party at her house. She has 3-1/2 cups of sugar. The recipe calls for 3/4 cup of sugar for one batch of cookies. Write an equation that can be used to find c, the total number of batches of cookies she can make.
Monday, April 7, 2014 at 9:28pm

Math
ok I got now. Thank you so much for your help, I appreciate it.
Monday, April 7, 2014 at 9:25pm

Math
I got t=70 and it still says it is wrong.
Monday, April 7, 2014 at 9:23pm

Math
1n+7p = 5.55 3n+2p = 12.28 that's the same as 2n+14p = 11.10 21n+14p = 85.96 now subtract to get rid of the p's 19n = 74.86 n = 3.94
Monday, April 7, 2014 at 9:20pm

Math
1n + 7p = 5.55 3n + 2p = 12.28 from the first: n = 5.55-7p sub into the 2nd 3(5.55-7p) + 2p = 12.28 16.65 - 21p + 2p = 12.28 -19p = -4.37 p = .23 then n = 5.55 - 7(.23) = 3.94 check: 1 notebook + 7 pencils = 3.94 + 7(.23) = 5.55 3 notebooks + 2 pencils = 3(3.94) + 2(.23) = 12....
Monday, April 7, 2014 at 9:19pm

Math
Right now, (-2,-5) is 5 units below the x-axis so reflecting it over the x-axis would put it how many units above the x-axis ? And the total distance would be ...... ?
Monday, April 7, 2014 at 9:14pm

Math
Jim paid $ 5.55 for 1 notepad and 7 pencils. Anne paid $ 12.28 for 3 notepads and 2 pencils. How much does each notepad cost? Show all work
Monday, April 7, 2014 at 9:13pm

Math
What is the distance between (-2,-5) and its reflection over the x-axis?
Monday, April 7, 2014 at 9:07pm

Math
dQ/dt = 200(-.0488) e^-.0488 t
Monday, April 7, 2014 at 9:04pm

Math
3(0.4h+5)>4(0.2h+7) 1.2h + 15 > .8h + 56 1.2h - .8h > 56 - 15 .4h > 41 h > 41/.4 h > 102.5
Monday, April 7, 2014 at 9:03pm

Math
thanks
Monday, April 7, 2014 at 9:02pm

Math
A = Ai e^-kt .5 = e^-14.2 k ln .5 = -14.2 k k = .0488 so Q = 200 e^-.0488 t
Monday, April 7, 2014 at 9:02pm

Math
least common multiple 8 = 2*2*2 30 = 5*2*3 so we need a 5, 3 twos, and a 3 so 120
Monday, April 7, 2014 at 8:58pm

Math
y=-x x+y=3
Monday, April 7, 2014 at 8:56pm

math word problem PLEASE HELP
r = ribbon = 15 (5 3/8) - 10(3/4) r = 15 (43/8) - 60/8 r = (15*43 - 60 )/8 = 585/8 = 73 1/8 yards
Monday, April 7, 2014 at 8:55pm

math (Ms.Sue)
28ft.
Monday, April 7, 2014 at 8:51pm

Math
At a baseball stadium, every eighth person received a coupon for free popcorn. Every thirtieth person received a free hot dog. WHich person was the first to receive both free gifts?
Monday, April 7, 2014 at 8:50pm

math word problem PLEASE HELP
Susan uses 15 rolls of ribbon to decorate 10 wedding baskets. Each roll of ribbon is 5 3/8 yards long. After she decorates the baskets, she decides to cut off another 3/4 yard from the ribbon of each basket. Write and simplify an expression to fin out how much ribbon was used ...
Monday, April 7, 2014 at 8:42pm

Math
This is what I got and it says it is wrong. Can you tell me what I'm doing wrong please? Thanks Q(t) = 200(.5)^(.0704t) Q '(t) = (200/14.2) (.5)^(t/14.2) so when t = 21.5 Q ' (t) = (200/14.2) (.5)^(21.5/14.2) = 4.931 g/day
Monday, April 7, 2014 at 8:41pm

Math
Thanks for the help.
Monday, April 7, 2014 at 8:37pm

Math
11 is correct.
Monday, April 7, 2014 at 8:31pm

Math
Ms.Smith wrote the division problem shown below, using a box to represent the missing digit. What value can replace the box in the quotient to complete the division problem? 132 divided by 12 and i got 11 but does 11 answer the question or do i put 1 for the value left?
Monday, April 7, 2014 at 8:30pm

Math
Ahh, looks like neither one of us read the question carefully. P(t) given the percentage that will FAIL, which is 30.2% But it says, "what percentage ... is usable " so 100 - 30.2 or 69.8%
Monday, April 7, 2014 at 8:28pm

Math
You percent is percent that will FAIL It asks for the ones that do not fail.
Monday, April 7, 2014 at 8:28pm

Math
100 - 30.2
Monday, April 7, 2014 at 8:27pm

Math
This is what I got too, but it says that my answer is wrong.
Monday, April 7, 2014 at 8:26pm

math
505200000000000 = 505,200,000,000,000 = 505.2 * 10^12 = 5.052 * 10^14 so YES :)
Monday, April 7, 2014 at 8:25pm

math
Have to write the number would it be 505200000000000
Monday, April 7, 2014 at 8:21pm

Math
sin 2x - sinx =0 2sinx cosx - sinx = 0 sinx(2cosx - 1) = 0 sinx = 0 or cosx = 1/2 for sinx = 0 x = 0, 180°, 360° for cosx = 1/2 x = 60° , 300° so for 0 ≤ x ≤ 360° x = 0, 60, 180, 300, 360 in radians: x = 0 , π/3 , π , 5π/3 , 2π
Monday, April 7, 2014 at 8:20pm

math
5.052 x 10^14
Monday, April 7, 2014 at 8:16pm

science/math
1. No If it hits at 42 from the SURFACE that is 90-42 = 48 from the normal. The reflected ray will also be 48 from the normal. 2. NO 27 + 27 = 54
Monday, April 7, 2014 at 8:15pm

Math
just plug in t = 3 P(3) = 100(1 - e^-.36) = 30.23 So appr 30.2%
Monday, April 7, 2014 at 8:15pm

Math
sin 2 x = sin x when x = 0, 180, 360 etc
Monday, April 7, 2014 at 8:13pm

Math
Now I did problems very similar to this for you earlier. You try and I will check if I am around.
Monday, April 7, 2014 at 8:10pm

Math
Find the exact solutions of the equation In The interval.. Sin 2x -sin x=0
Monday, April 7, 2014 at 8:10pm

Math
You sure are having quite a time with these exponential functions! y = 190 [ 1- .955 e^-(.25 t) ] If t = 9 y = 190 [ 1 - .955(.105) ] = 190 [ 1 - .1 ] = 171 cm In other words it has reached 90% of max length in 9 years now dy/dt = 190(-.955) (-.25)(.105) = 4.76 cm/year c) when...
Monday, April 7, 2014 at 8:09pm

science/math
1. A light ray strikes a mirror at an angle of 42° from the surface of the mirror. What angle does the reflected ray make with the normal Ans. 42° 2. A ray of light hits a mirror at 27° from the normal. What is the angle between the reflected ray and the normal. ...
Monday, April 7, 2014 at 8:08pm

Math
P(t) = 100(1-e^-0.12*3) P(3) = 100(1-0.6977) = 30.23% Fails. 100% - 30.23% = 69.7% Usable.
Monday, April 7, 2014 at 8:05pm

math
Right. :-)
Monday, April 7, 2014 at 8:03pm

math
I got 0.675?
Monday, April 7, 2014 at 7:53pm

Math
The percentage of a certain brand of computer chips that will fail after t years of use is estimated to be P(t) = 100(1 − e−0.12t ). What percentage of this brand of computer chips are expected to be usable after 3 years? (Round your answer to one decimal place.)
Monday, April 7, 2014 at 7:50pm

Math
Phosphorus-32 (P-32) has a half-life of 14.2 days. If 200 g of this substance are present initially, find the amount Q(t) present after t days. (Round your growth constant to four decimal places.) How fast is the P-32 decaying when t = 21.5? (Round your answer to three decimal...
Monday, April 7, 2014 at 7:49pm

math
Divide.
Monday, April 7, 2014 at 7:49pm

math
0.325 = three hundred twenty-five ten thousandths
Monday, April 7, 2014 at 7:49pm

Math
The length (in centimeters) of a typical Pacific halibut t years old is approximately f(t) = 190(1 − 0.955e−0.25t). (b) How fast is the length of a typical 9-year-old Pacific halibut increasing? cm/yr (c) What is the maximum length a typical Pacific halibut can ...
Monday, April 7, 2014 at 7:48pm

math
During a recent free throw basketball tournament, jessica makes 27 out of 40 free throws. Express this amount as a decimal.
Monday, April 7, 2014 at 7:44pm

math
A professional baseball player has a battung average of 0.325 , express the players batting average as a fraction in simplest form.
Monday, April 7, 2014 at 7:43pm

math
Right. 15% of her answers were wrong.
Monday, April 7, 2014 at 7:34pm

Math
The largest exponent of the variable is 2. Therefore, it is a 2nd degree polynomial.
Monday, April 7, 2014 at 7:34pm

math
I am not sure but I have 15?
Monday, April 7, 2014 at 7:29pm

Math
I got the answer .22882 is that correct?
Monday, April 7, 2014 at 7:25pm

math
You mistyped Green Marbles. I assume 3. Total marbles = 5 + 6 + 3 + 2 = 16 Total Blue and Green = 6+3 = 9 Fraction of those marbles = 9/16 = 0.5625 If there are not 3 marbles, then change.
Monday, April 7, 2014 at 7:19pm

math
And your answer is?
Monday, April 7, 2014 at 7:18pm

MATH
spam spam spam spam spam spam spam spam
Monday, April 7, 2014 at 7:18pm

math
On a recent math test, monique earned an 85%. Which value represnts the amount monique did not answer correctly?
Monday, April 7, 2014 at 7:18pm

math
If you post your answers, I'll check them.
Monday, April 7, 2014 at 7:18pm

Consumer Math
I don't entirely understand the question. Let me do my best. $187,500 is cost of house. 20%, or $37,500 is the down payment. The loan amount would be $187,500 - $37,500 = $150,000. If we assume the annual rate of the loan is 4.65% Then the monthly rate would be 4.65%/12 = ...
Monday, April 7, 2014 at 7:16pm

Math
12.5/5 = x/8
Monday, April 7, 2014 at 7:13pm

math
There are 5 red marbles, 6 blue marbles, e green marbles, and 2 yellow marbles in a bag. What percent or fraction represents the number of blue and green marbles in the bag?
Monday, April 7, 2014 at 7:11pm

math
The New Jersey state lottert is $173,000,00. If you and your family win the lottery and recieve 5% of that amount for the next twenty years how kuch money will you recieve each year?
Monday, April 7, 2014 at 7:09pm

Math
This is about ratios Jason spent $12.50 for 5 ft of 6 in copper pipe. He returned after 2 days to buy 3 more feet of the same pipe. How much did he spend in all for a pipe
Monday, April 7, 2014 at 7:05pm

math
I'll be glad to check your answer.
Monday, April 7, 2014 at 7:03pm

MATH - Algebra
yes, except you had 22x, not 11x So, the answer is x^2 + 2x also, be sure to use parentheses to make it clear that you mean (11x^2+22x)/11 and not 11x^2 + (22x/11)
Monday, April 7, 2014 at 7:03pm

math
Which set of numbers does not contain three numbers that are equivalent? - Choices are:- A. 1/2,0.5,50% B. 1/5,0.02,20% C. 1/8,0.125,12.5% D. 1/20,0.05,5%
Monday, April 7, 2014 at 7:01pm

Math
well, we have cosa = 12/13 sinb = 4/5 So, just plug them into cos(a+b) = cosa cosb - sina sinb
Monday, April 7, 2014 at 7:00pm

math
0.97 * 57,545 =
Monday, April 7, 2014 at 7:00pm

math
Yankee stadium can seat 57,545 people. At a recent game, it was reported that appoximately 97% of the tickets were sold. Based on that report, what is the best estimate for how many people attended the game?
Monday, April 7, 2014 at 6:59pm

MATH ✿╣Check╠✿
looks good to me
Monday, April 7, 2014 at 6:59pm

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