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April 16, 2014

Homework Help: Math

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Recent Math Questions

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math
select the values of ^xthat are the solutions to inequality 0>x^2+5x-2
Friday, March 14, 2014 at 11:38am

math
You state different interest rates for the 1st and 3rd debt, but state no rate for the 2nd debt of $2000 due in 2 years. Other than , choose a time as a reference or focal date I picked the present time, so at present, the value of the debt = value of payments 500(1.03)^-2 + ...
Friday, March 14, 2014 at 10:57am

Math
cost of 1st machine = 250000 + 30000( 1 - 1.085^-10)/.085 - 75000(1.085)^-10 = 413,669.04 cost of 2nd machine = 400000 + 225000(1.085)^-5 - 175000(1.085)^-10 = 472,235.27 1st is cheaper, I used the present time as my "focal point in time" check my arithmetic
Friday, March 14, 2014 at 10:50am

Math
c
Friday, March 14, 2014 at 10:19am

math
Jungle Jim owes three debts: $500 due in one year plus interest at 6% compounded semi-annually, $2000 due in two years, $1000 due in three years plus interest at 5% compounded monthly. He wishes to discharge these debts by paying $500 now and two equal but unknown payments in ...
Friday, March 14, 2014 at 10:11am

Math
A firm is evaluating two machines. The first costs $250,000 and will require annual maintenance of $30,000 per year for 10 years. At the end of 10 years, the salvage value will be $75,000. The second machine costs $400,000 and will require $225,000 at the end of the fifth year...
Friday, March 14, 2014 at 9:35am

math
78
Friday, March 14, 2014 at 9:00am

math
what's the smallest number that is a multiple of both 2 and 3? And for 8 and 10?
Friday, March 14, 2014 at 5:44am

math
best to use shells here: v = ∫[0,2] 2πrh dx where r = 3-x and h = y = x^3 v = 2π∫[0,2] (3-x)x^3 dx Simply polynomial, so just plug and chug.
Friday, March 14, 2014 at 5:32am

math
Hmmm. I think I mean 1 : 5/6 : 2/3
Friday, March 14, 2014 at 5:26am

math
(2/5) : (1/3) : (1 - 2/5 - 1/3) 1 : 6/5 : 3/2
Friday, March 14, 2014 at 5:26am

Math
when the lines are the same. 2x-y = 5 Hmmm. a typo - no y term in the 2nd equation. Anyway, since there are 8x, the same line would be just 4 times the other. 8x - 4y = 20 Looks like a=10
Friday, March 14, 2014 at 5:19am

math
so, add up the taxes: .18+.124+.029 = .333 Since it's a quarterly return, .333/4 * 20640 = 1718.28 Now, how about showing some ideas on the others you posted?
Friday, March 14, 2014 at 5:17am

Math~
The sum of two numbers 43 and their difference is 35.find the numbers.
Friday, March 14, 2014 at 4:16am

math
On August 18, Sullivan Company received an invoice in the amount of $6,700, having terms of sale of 4/15 EOM. What is the discount date?
Friday, March 14, 2014 at 3:57am

math
Ace Formalwear buys tuxedos from a supplier and has an invoice amount of $27,700. The terms of the sale are 3/20, n/30. If Ace sends a partial payment of $7,400 on the discount date, what is the net amount still due?
Friday, March 14, 2014 at 3:54am

math
Solve for the base, rounding answer to hundredths if necessary: 76 is .2% of ______.
Friday, March 14, 2014 at 3:46am

math
Jerry King is a server in a restaurant that pays a salary of $22 per day. He also averages tips of 18% of his total gross food orders. Last week he worked 6 days and had total food orders of $2,766.50. What was his total gross pay for the week?
Friday, March 14, 2014 at 3:42am

math
Solve the following problem using 6.2%, up to $106,800, for social security tax and 1.45%, no wage limit, for Medicare tax. Kristy Dunaway has biweekly gross earnings of $1,750. What are her total social security and Medicare tax withholdings for a whole year?
Friday, March 14, 2014 at 3:38am

math
Thomas Rendell's company pays him a straight 6% commission with a $1,350 drawing account each month. If his sales last month totaled $152,480, how much commission is owed to Thomas?
Friday, March 14, 2014 at 3:28am

math
How much combined tax should be withheld from the paycheck of a single employee earning $3,185 per month and claiming zero withholding allowances?
Friday, March 14, 2014 at 3:26am

math
Compute Mike's estimated tax payment for the fourth quarter. He is self-employed and he expects to earn $20,640 this year. His estimated income tax rate is 18%. For self-employed persons, social security tax is 12.4% of wages up to $106,800, and Medicare tax is 2.9% of all...
Friday, March 14, 2014 at 3:20am

Math
For what value of a, would the system have an infinite number of solutions? 2x-y=5 8x-47=2a A) 2 B) 4 C)5 D)10 E)20
Friday, March 14, 2014 at 1:18am

Algebra
1) If N is the set of natural numbers that are factors of 18, represent this set in roster form. 2) Suppose U={1,2,3,4,5,6,7,8,9,10} is the universal set and A={1,4,5,9,10} What is A? 3) The wrestling team is holding a car wash. The teams goal is to raise at lease 252 and each...
Friday, March 14, 2014 at 1:16am

math
Three boys are sharing a cake. Joey ate 2/5 of the cake, Billy ate 1/3 of it, and Matt ate the remaining piece. What is the ratio of Joey's piece to Billy's piece to Matt's piece?
Friday, March 14, 2014 at 12:39am

math
in the given figure ABCD is the trapezium in which AD parallel to BC. angle ABC=90 degree , AD=16cm ,AC=41cm and BC=40cm. find the area of the trapezium.
Friday, March 14, 2014 at 12:04am

math
in the given figure ABCD is the trapezium in which AD parallel to BC. angle ABC=90 degree , AD=16cm ,AC=41cm and BC=40cm. find the area of the trapezium.
Thursday, March 13, 2014 at 11:56pm

math
in the given figure ABCD is the trapezium in which AD parallel to BC. angle ABC=90 degree , AD=16cm ,AC=41cm and BC=40cm. find the area of the trapezium.
Thursday, March 13, 2014 at 11:55pm

math
in the given figure ABCD is the trapezium in which AD parallel to BC. angle ABC=90 degree , AD=16cm ,AC=41cm and BC=40cm. find the area of the trapezium.
Thursday, March 13, 2014 at 11:52pm

math
Find the volume of the region obtained by revolving the area below about the line x=3. y = x3, x=2, y=0 Find the moment of inertia of this solid of revolution.
Thursday, March 13, 2014 at 11:51pm

math
Limited liability of the owners means that the stockholders of a corporation share a personal liability for all debts of the corporation.
Thursday, March 13, 2014 at 11:04pm

Math
Where did the 25 come from?
Thursday, March 13, 2014 at 10:57pm

Math help, anyone?
What don't you understand about these problems? How can we help you?
Thursday, March 13, 2014 at 10:46pm

Math help, anyone?
Find the volume of a square pyramid with a base length of 9 cm and a height of 4 cm. 324 cm3 108 cm3 36 cm3 152 cm3 Find the volume of a cone with a radius of 10 mm and a height of 6 mm. 628 mm3 600 mm3 1,884 mm3 1,254 mm3 Find the lateral area of a cone with a radius of 7 ft...
Thursday, March 13, 2014 at 10:44pm

Math
The voltage (in volts) induced in a coil of wire is v = (2t + 1)^0.5. The current in the coil is initially 0.3 amps, and the inductance is 5H. What is the equation for the current in the coil?
Thursday, March 13, 2014 at 10:39pm

math
Fp = 1.5*sin18 = Parallel Force(Wt.) Fn=1.5*cos18 = Normal or perpendicular force(Wt.).
Thursday, March 13, 2014 at 10:28pm

math
i need to draw a diagram to show the solution to 2.6/0.4. and explain what the quotient mean?
Thursday, March 13, 2014 at 10:03pm

math
well first a typical common denominator example find a common denominator to compare 1/3 and 2/5 the denominator will have to have a 3 in it and a five in it In this simple case 3*5 = 15 will work Now find something over 15 that is the same as 1/3 multiply top and bottom by ...
Thursday, March 13, 2014 at 9:32pm

math
how to use a common denominator to write an equivalent fraction for each fraction?
Thursday, March 13, 2014 at 9:12pm

Math
would it be negative 17?
Thursday, March 13, 2014 at 9:06pm

Math
Write an integer that is represented by the bold words in the following sentence. The temperature dropped 17 degrees between noon and midnight.
Thursday, March 13, 2014 at 8:54pm

math
You're welcome. :-)
Thursday, March 13, 2014 at 8:30pm

math
thank you, I got it!
Thursday, March 13, 2014 at 8:26pm

math
http://www.learner.org/interactives/geom​etry/3d_prisms.html
Thursday, March 13, 2014 at 8:19pm

math
How Many Lateral Faces Does A Triangular Prism Have?
Thursday, March 13, 2014 at 8:14pm

Math
bxdnxcncxn
Thursday, March 13, 2014 at 8:05pm

math
I need help on how to use a common denominator to write an equivalent fraction for each fraction?number 1 is 1/2,1/3 and number 2 is 7/8,3/10 please help
Thursday, March 13, 2014 at 7:58pm

math
Cross multiply and solve for x. (3/4) / (2/3) = x / 1
Thursday, March 13, 2014 at 7:41pm

Math PLEASE HELP ME!!
10% would be .795, round up to .8 1% would be .08, multiply that by 3 get 0.24 .8+ 0.24= $1.04 7.95-1.04= $6.91 But really dude you should have been able to do that one... Looser! Ik ur prob in high school now but whatevs
Thursday, March 13, 2014 at 7:40pm

math
-6 * 7 = -42 -42 + (-45) = ?
Thursday, March 13, 2014 at 7:39pm

math
Sarah uses 3/4 pound of blueberries to make 2/3 cup of jam. How many pounds of blueberries does she need to make each cup of jam? A. 1/12 B. 1/2 C. 1 1/8 D. 1 5/12
Thursday, March 13, 2014 at 7:38pm

math
A submarine starts at a position relative to sea level of -45 meters. The submarine then changes it's position at a rate of -6 meters per minute. What is the submarine's position after 7 minutes? A. -3 meters B. -44 meters C. -58 meters D. -87 meters
Thursday, March 13, 2014 at 7:34pm

Math
You'll find out after you correctly solve your math problems.
Thursday, March 13, 2014 at 7:07pm

Math
Why does a sheep scratch himself?
Thursday, March 13, 2014 at 6:57pm

Math. please
Find the volume of a square pyramid with a base length of 9 cm and a height of 4 cm. 324 cm3 108 cm3 36 cm3 152 cm3 Find the volume of a cone with a radius of 10 mm and a height of 6 mm. 628 mm3 600 mm3 1,884 mm3 1,254 mm3 Find the lateral area of a cone with a radius of 7 ft...
Thursday, March 13, 2014 at 6:38pm

Math
yes
Thursday, March 13, 2014 at 6:12pm

math
15.2
Thursday, March 13, 2014 at 6:11pm

Math
Vicki bought an ice cream cake cut into 6 equal pieces. Vicki, Margo,and Elena each took 2 pieces of the cake home. Vicki says she and each of her friends took 1/3 of the cake home. Is Vicki correct? And
Thursday, March 13, 2014 at 6:10pm

science pls help
sry, im not that great at math even though this is science. so the answers are 1. true 2. c 3. a 4. a right...? thanx Steve!:)
Thursday, March 13, 2014 at 5:37pm

math
ynhjn ghn
Thursday, March 13, 2014 at 5:31pm

Math
7*8*4 = 56*4 = 224 recall that using a variable, 7x * 8x * 4x = 224x^3 Now, using units, 7ft * 8ft * 4ft = 224 ft^3
Thursday, March 13, 2014 at 5:24pm

Math
sum of 1 + 3 + 9 + 27 ..... 3^(n-1) geometric series a = 1 r = 3
Thursday, March 13, 2014 at 5:24pm

Math
7 * 8 * 4 = ?
Thursday, March 13, 2014 at 5:24pm

Math
How do I multiply the three dimensions? Sorry I can not understand. Could you please explain to me Thanks/
Thursday, March 13, 2014 at 5:22pm

Math
after n hours, 1+3+3^2+3^3 + ... + 3^n = (3^n - 1)/2 people have heard the joke. So, we want n such that (3^n - 1)/2 = 8500 3^n = 17001 n = 8.8666 hours = 8 hrs 52 min
Thursday, March 13, 2014 at 5:21pm

Math
did you multiply the three dimensions? If so, what did you get? If not, what's the problem?
Thursday, March 13, 2014 at 5:17pm

Math
The population of humorville is 8500 people. In this town Jokes travel fast, in one hour, each person who hears a joke tells three other people who have not heard it, and tells no one else. Last Friday, a visitor from out of town told the police chief a new joke at 10:00 a.m. ...
Thursday, March 13, 2014 at 5:16pm

Math
A rectangular prism measuring 7 ft by 8 ft by 4 ft 224 ft3 112 ft3 232 ft3 116 ft3
Thursday, March 13, 2014 at 5:16pm

Math - Answer Check
I'd say #15 is right, since you were given 180,000 inches. 2.84 miles is close enough, IMO.
Thursday, March 13, 2014 at 5:16pm

MATH
1/5 is correct 1/4 may be correct, but only if there is exactly one white sweater in the bunch.
Thursday, March 13, 2014 at 5:11pm

math
I'd use a bar graph.
Thursday, March 13, 2014 at 5:10pm

math
Jill is correct because angels is on any shape
Thursday, March 13, 2014 at 5:08pm

MATH
but 1 is not a prime. It is explicitly excluded from the list of primes.
Thursday, March 13, 2014 at 5:06pm

math
What kind of graph would you use to show the number of twins born each year from 1997 to 2002? Explain your answer I don't know if it would be a bar graph or line graph.
Thursday, March 13, 2014 at 5:04pm

math
8+8+8+8+8+8+8+8 = 64
Thursday, March 13, 2014 at 4:55pm

math
https://www.google.com/webhp?source=sear​ch_app#q=8*8%3D
Thursday, March 13, 2014 at 4:55pm

Math - Answer Check
12 is wrong 15 is close. I got 179,942.4 inches The rest are right.
Thursday, March 13, 2014 at 4:53pm

Math - Answer Check
Oops. It would be 39,600, right?
Thursday, March 13, 2014 at 4:52pm

math
8x8=
Thursday, March 13, 2014 at 4:50pm

Math - Answer Check
#12. a mile is 5280 ft, not 5820 The rest look ok (including #15!)
Thursday, March 13, 2014 at 4:48pm

Math - Answer Check
Dimensional Analysis 10. 17 cups = (8.5) pints 11. 18 pounds = (288) oz 12. 7.5 miles = (43650) ft 13. 32 quarts = (8) gal 14. 18 quarts = (72) cups 15. 180,000 inches = (2.84) miles 16. 4.5 tons = (144,000) oz
Thursday, March 13, 2014 at 4:45pm

math
yes yes assuming only one of them is white which is implied by the grammar.
Thursday, March 13, 2014 at 4:32pm

math
2*6*6 ?
Thursday, March 13, 2014 at 4:30pm

math
Joe puts 5 books in his backpack as he leaves for school. He has 2 math books, 1 science book, and 2 history books. What is the probability that he will grab his science book out of his backpack without looking? I think 1/5 Jacquie has 4 sweaters that go with her new jeans. ...
Thursday, March 13, 2014 at 4:29pm

math
how many kinds of lunches are being served
Thursday, March 13, 2014 at 4:27pm

math
what is volume of 72 with each dimension that is at least 2 feet
Thursday, March 13, 2014 at 4:16pm

math
Thank you SO much for all of your help. I am sure all the questions you have to answer for all of us in so many subjects can be very grueling. Just wished I had your smarts.
Thursday, March 13, 2014 at 4:12pm

MATH
Joe puts 5 books in his backpack as he leaves for school. He has 2 math books, 1 science book, and 2 history books. What is the probability that he will grab his science book out of his backpack without looking? I think 1/5 Jacquie has 4 sweaters that go with her new jeans. ...
Thursday, March 13, 2014 at 4:09pm

math
yes. 1/10 for breakfast bars
Thursday, March 13, 2014 at 4:07pm

math
was the second question correct?
Thursday, March 13, 2014 at 4:06pm

math
yes 1/10 for the breakfast bars strange, most of your problems are easy but the two coins was a level higher
Thursday, March 13, 2014 at 4:04pm

math
All the problem said was Two of 6 CD's are scratched. It wants me to take the probability and write it as a fraction
Thursday, March 13, 2014 at 4:03pm

math
four possibilities h h h t t h t t only ONE of the four is two heads so 1/4 NOT 1/2
Thursday, March 13, 2014 at 4:03pm

math
Daniel flips 2 coins. Find the probability of the coins both coming up heads. I think 2/4 or 1/2 Serena has a bag filled with 10 breakfast bars. She knows that 1 of them is her favorite. Find the probability that she will select her favorite bar by reaching into the bag ...
Thursday, March 13, 2014 at 4:01pm

MATH
Yes
Thursday, March 13, 2014 at 4:01pm

math
I tried to tell you, you must give the whole question. do you want probability of scratched CD or unscratched CD? for example 1/4 ARE Fiction but 3/4 are NON-Fiction You did not say which you wanted.
Thursday, March 13, 2014 at 3:58pm

MATH
You can preselect 6 radio stations in your car. You hit a button without looking. What is the probability that it is your favorite station? I think 1/6
Thursday, March 13, 2014 at 3:57pm

math
Of 12 books, 3 are fiction I think 3/12 or 1/4 Two of 6CD's are scratched 2/6 or 1/3 Nine out of 10 teens like to shop I think 9/10
Thursday, March 13, 2014 at 3:55pm

math
Yes, assuming the mashed potatoes are not well known to be lumpy and the heart surgeon said French fries are ok.
Thursday, March 13, 2014 at 3:52pm

MATH
I am assuming the others are correct.
Thursday, March 13, 2014 at 3:50pm

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