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August 30, 2014

Homework Help: Math

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Recent Math Questions

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Math
If 2a = 3b, 1/3c = 6b^2, and b > 0, what is c in terms of a? The answer choices are: (A) 8a^2 + 6 (B) 8a^2 + 12 (C) 12a^2 + 6 (D) 18a^2 + 6 (E) 18a^2 + 12 Thank you!
Monday, August 4, 2014 at 10:48pm

math test review
18. In triangle ABC, m<C=2m<b,m<A=6m<B. what is the measure of <c? A.5 degrees B.15 degrees C.20 degrees D.30 degrees E.40 degrees
Monday, August 4, 2014 at 10:22pm

math
Mang jose wants to make a table which has an area of 8 m^2. The length of the table has to be 2 m longer than the width. 1. if the width of the table is p meters what will be its length? 2.form a quadratic equation that represents the situation? 3.find the solution from the ...
Monday, August 4, 2014 at 10:13pm

math
1. If b is positive integer less than 200, then how many integer pairs (a,b) satisfy the equation a/b= 2/9?
Monday, August 4, 2014 at 10:08pm

math
1. If b is a positive integer than 200, then how many integer pairs (a,b) satisfy the equation a/b= 2/9
Monday, August 4, 2014 at 10:00pm

math
A tire company determines that to manufacture a certain type of tire, it costs $9000 to set up the production process. Each tire that is produced costs $21 in material and labor. The company sells this tire to wholesale distributors for $49 each. (a) Find a linear function C ...
Monday, August 4, 2014 at 9:11pm

math test review
16. If the base of a right triangle is 8 (square root)2 and the hypotenuse is 18, what is the area of the triangle? A.14 B.14 square root 2 C.56 square root 2 D.64 E.64 square 2
Monday, August 4, 2014 at 8:00pm

math hw
In set of 30 different positive integers, every number is even and/or a multiple of 3. If 22 of these numbers are even and 15 are multiple of 3, then how many of these numbers are multiple of 6?
Monday, August 4, 2014 at 7:54pm

math
3×44÷33×34
Monday, August 4, 2014 at 7:53pm

math hw
2. If a^2-b^2=20 and a+b=2, what is the value of a-b? I added the a^2-b^2+20 and a+b+20, but i couldn't get the answer to equal a-b.
Monday, August 4, 2014 at 7:52pm

math hw
10.Thirty students in a chemistry class took a test on which the overall average score was 78. If the average score for 15 of those students was 85, what was the average score for the remaining members of the class? I know that "average" means dividing, but i'm ...
Monday, August 4, 2014 at 7:49pm

math
9. In Mr.chin's math class there were g girls and b boys. The number pf girls was 5 less than twice the number of boys. What is the value of g in terms of b? this is what I have so far: 2n-5
Monday, August 4, 2014 at 7:46pm

Math
(v-5)(v+3) Is this answer correct v+15
Monday, August 4, 2014 at 7:28pm

Math 221
(-4)^-3 is this -12
Monday, August 4, 2014 at 7:22pm

Math 221
24x^5-15x^4/3x^2
Monday, August 4, 2014 at 7:10pm

Math
7b^3(5b^6+9b) I am trying to see if this answer is correct 35b^9+63b^4
Monday, August 4, 2014 at 7:06pm

math
Ronelio invests $29,000 in two one-year certificates of deposit. One certificate pays 4%, and the other pays 4.75% simple interest annually. (a) Construct a model for the total interest I(x) Ronelio earns in one year on his investments. (Let x represent the amount invested at ...
Monday, August 4, 2014 at 6:54pm

Math
polynomials (4u^2-2u+7)+(-5u^2+u+3)
Monday, August 4, 2014 at 6:52pm

Math
(-2x^4)^2 y
Monday, August 4, 2014 at 6:37pm

Math 221
Polynomials x4y5 x3y6
Monday, August 4, 2014 at 6:24pm

math 4
Henry Devine bought a new dishwasher for $320. He paid $20 down and made 10 monthly payments of $34. What actual yearly interest rate did Henry pay? A. 29.09 B. 68.75End of exam C. 14.55 D. 34.38 Please explain to me
Monday, August 4, 2014 at 4:21pm

math 3
The gross income of Ginger Hughes is $215 per week. Her deductions are: $15.16, FICA tax; $29.33, income tax; 2% state tax; 1% city tax; and 3% retirement fund. What is her net income? Please explain to me
Monday, August 4, 2014 at 3:27pm

math
Jan Quint earns $7.00 an hour at her job and is entitled to time-and-a-half for overtime, and double time on holidays. Last week she worked 40 hours of regular time, 9 hours of overtime, and 12 hours of holiday time. How much did she earn last week? Please explain this to me
Monday, August 4, 2014 at 3:25pm

math
Jim paddles from one shore of a lake three miles wide at 4 mph, and John paddles from the opposite shore at 5 mph. How long will they travel before they meet? please explain to me
Monday, August 4, 2014 at 3:23pm

math
How many digits are presents from 1 - 2014
Monday, August 4, 2014 at 12:57pm

math
find the volume of the solid obtained by rotating the region bounded by the given curves about the specified line. x=2=2sqrty, x=0, y=9 about the y axis. Is this the disk or shells method and how do I set this problem up?
Monday, August 4, 2014 at 9:16am

math
Investor A deposits 1,000 into an account that earns an interest rate of 6% per annum compounded semi-annually. On the same date, Investor B deposits 800 into an account that earns an interest rate of 8% per annum compounded monthly. After how many years does Investor B’s...
Monday, August 4, 2014 at 8:48am

math
when the expression x^3+mx^2+nx-5 is divided by x+2 and x+3, the remainders are 2 and 13, respectively. find the value of m and n. tnx..
Monday, August 4, 2014 at 8:22am

math
1.) when the expression 4x^2-3x-8 is divided by x-a, the remainder is 2. find the value of a. 2.) the polynomial 3x^3+mx^2+nx+5 leaves a remainder of 128 when divided by x-3 and a remainder of 4 when divided by x+1. calculate the remainder when the polynomial is divided by x-3...
Monday, August 4, 2014 at 5:55am

Math
Sin square 5 degree plus Sin square 10 degree plus Sin square 15 degree plus..........Sin square 90 degree
Monday, August 4, 2014 at 2:52am

math
In the z transformation formula, z = (x – M)/s the x stands for __________. (Points : 1)
Sunday, August 3, 2014 at 11:16pm

math
Find the standard form of the equation of the line that passes through (-3,2) and (-4,-7)
Sunday, August 3, 2014 at 9:33pm

math plz ugh
Find an equation of the line with slope -3/4 and y-intercept (0,-5).write the answer in slope intercept form.
Sunday, August 3, 2014 at 8:29pm

math
How would you find an equation of horizontal line that passes through the point (-4,-8)?
Sunday, August 3, 2014 at 7:40pm

math help plz!
Write the following equation in slope-intercept form. Then identify the slope and y-intercept. -3x+7y=-9
Sunday, August 3, 2014 at 7:33pm

math
find teh volume of the solid by rotating y=1-x^2, y=0 around the xaxis
Sunday, August 3, 2014 at 6:47pm

Math
I'm having a bit of trouble with the following problem. Thanks! Kevin bought a new car for $22,000. He made a down payment of $5,500 and has monthly payments of $406.69 for 4 years. He is able to pay off his loan at the end of 30 months. Using the actuarial method, find ...
Sunday, August 3, 2014 at 5:40pm

Math
there are 9 blue marbles, 4 black marbles, 5 white marbles and 6 red marbles. If the probability of drawing a blue marble is now 1/3, how many of the 6 marbles removed were blue?
Sunday, August 3, 2014 at 3:03pm

math
what does the polar equation r=1/(sintheta + costheta) represent? how do I do this problem
Sunday, August 3, 2014 at 2:53pm

math
I know the answer. I don't know how to get to the answer to this problem: The number of marbles Mari has is 2/3 the number Tanya has. Together they have 40 marbles. How many marbles does Tanya have? I know the answer is 24, but how?
Sunday, August 3, 2014 at 1:10pm

math
The number of marbles Marci has is 2/3 the number Tanya has. Together they have 40 marbles. How many marbles does Tanya have?
Sunday, August 3, 2014 at 11:18am

Math DE
Find the general solution of the differential equation dy/dx-4y= -5y^2
Sunday, August 3, 2014 at 8:44am

math
sketch the graph of the linear function passing through (-6,5) and (-6,3)
Sunday, August 3, 2014 at 2:40am

math
Many scientists believe that the increase of carbon dioxide (CO2) in the atmosphere is a major contributor to global warming. The Environmental Protection Agency estimates that one gallon of gasoline produces on average about 19 pounds of CO2 when it is combusted in a car ...
Saturday, August 2, 2014 at 11:02pm

math
Jane invests 500 at t=0 at a nominal annual interest rate of 6%, compounded quarterly. What additional amount will she need to invest at t=2 in order to have a total of 1,000 at t=5?
Saturday, August 2, 2014 at 10:59pm

math
Hey I'd really appreciate some help with this problem please. Kathie and her friend Tia are on their motorcycles heading north to Springfield on the same straight highway. Kathie leaves from a point 115 miles south of Springfield at 10:00 A.M., and Tia leaves from a point ...
Saturday, August 2, 2014 at 9:04pm

Math
Express the following in term of sum (or difference)of logarithms: log (10A)/(7B^2)
Saturday, August 2, 2014 at 9:02pm

college math
On August 4, 2007, NASA's Phoenix Mars Lander was launched into space to search for life in the icy northern region of the planet Mars; it touched down on Mars on May 25, 2008. As the ship raced into space, its jet fuel tanks dropped off when they were used up. The ...
Saturday, August 2, 2014 at 9:01pm

College math
Express the following in terms of Sum(or differnece) of logarithm's: log sub-b T^5 W^2 Z
Saturday, August 2, 2014 at 9:00pm

College math
Convert to an exponential equation: -In45=3.80666249 and -Log sub.B T^5=W
Saturday, August 2, 2014 at 8:56pm

College math
Determine whether the following function is a one-to-one function,and if the function is a one-to-one, find a formula for the inverse. F(x)=x^3-27
Saturday, August 2, 2014 at 8:52pm

College math
Determine whether the following function is a one-to-one function,and if the function is a one-to-one, find a formula for the inverse. F(x)=(5x-6)/(2x+3)
Saturday, August 2, 2014 at 8:52pm

College math
Determine whether the following function is a one-to-one function,and if the function is a one-to-one, find a formula for the inverse. F(x)=5/(x+3)
Saturday, August 2, 2014 at 8:49pm

Math
A model rocket is launched with an initial velocity of 164ft/sec. It's height h, in feet, after t seconds is given by the formula h=164t-16t^2. After how many seconds will the rocket first reach a height of 400ft?
Saturday, August 2, 2014 at 8:09pm

Math
An architect has allocated a rectangular space of 240ft^2 for a square dining room and a 14 ft wide kitchen. Find both the width of the square dining room and the length of the entire rectangular space.
Saturday, August 2, 2014 at 8:04pm

statistics
The trends in international mathematic and science study (TIMSS) in 2007 examined eighth grade proficiency in math and science. The mean mathematics scale score for the sample of eighth grade students in the US was 508.5 with a standard error of 2.83. Construct a 95% ...
Saturday, August 2, 2014 at 7:14pm

math
Ivanna is going to rent a truck for one day. There are two companies she can choose from, and they have the following prices. Company A charges 114 and allows unlimited mileage. Company B has an initial fee of 65 and charges an additional 0.70 for every mile driven. For what ...
Saturday, August 2, 2014 at 6:44pm

math
For a given right triangle, side A = 490 ft and side b = 960 ft. What is the measure of angle B to the nearest degree?
Saturday, August 2, 2014 at 6:38pm

math
With a tax rate of .0200, a tax bill of $1050 corresponds to an assessed valuation of
Saturday, August 2, 2014 at 2:28pm

math
The cost of importing five dozen china dinner sets, billed at $32 per set, and paying a duty of 40%, is A. $224 B. $2688 C. $768 D. $1344
Saturday, August 2, 2014 at 2:04pm

math
A quart is approximately sixty cubic inches. A cu. ft of water weighs approximately sixty pounds. Therefore, a quart of water weighs, approximately, A. 2 lbs. B. 3 lbs. C. 4 lbs. D. 5 lbs.
Saturday, August 2, 2014 at 2:02pm

Math
Simplify the following expressions by using trigonometric form and De Moivre's theorem a. (√3-i)^4 b. (-4+4i√3)^5 c.(2+3i)^4 d. (4-i)^6
Saturday, August 2, 2014 at 1:24pm

math
If 3= 9b/a ,What is a/b equal to ?
Saturday, August 2, 2014 at 10:38am

math
In how many ways can the letters of the word FACTORING be arranged, without changing the order of the vowels a, o, i
Saturday, August 2, 2014 at 6:11am

math
Find the number of arrangements of the letters of the word STRENGTH if the order of the consonants must not be changed?
Saturday, August 2, 2014 at 5:25am

Math
How do I find the greatest common factor of 54, 81, and 135? I don't understand the tree diagram either. :(
Friday, August 1, 2014 at 10:26pm

math
how to write 2nd august 2014 in 5letters without numbers
Friday, August 1, 2014 at 9:31pm

math
Mary Stevens earns $6 an hour at her job and is entitled to time-and-a-half for overtime, and double time on holidays. Last week she worked 40 hours of regular time, 6 1/2 hours of overtime, and 8 hours of holiday time. How much did she earn?
Friday, August 1, 2014 at 5:26pm

math
Four students at a computer fair competed against each other in a space-travel game. Chris scored 2/3 as many points as the winner Pat. Rich scored 1/2 as many points as Chris. Tome scored 100 points, which was 90 points less than Rich's score. How many points did Pat score?
Friday, August 1, 2014 at 11:51am

math
How many cubic yards of concrete are needed to make 1200 square concrete posts 9 inches by 9 inches by 6 feet?
Friday, August 1, 2014 at 9:34am

math
express the limit as a definite integral. Do Not Evaluate the integral. lim n->infinity (1+i(3/n))^2(3/n) explain the answer please
Friday, August 1, 2014 at 6:51am

math
Timmy and Kenny raced in biking and running. Timmy won first place by clocking in at 5.75 min. in biking and 8.2 min. in running. Kenny won 2nd place by clocking in at 6.2 min. in biking and 9.4 min. in running. What is the difference of their clock-ins together?
Friday, August 1, 2014 at 4:13am

math
Marjorie is on her way to school. She walks 0.75 Km North, 0.5 Km. East and 0.45 Km. South. How many Km. did she walk to get to school?
Friday, August 1, 2014 at 4:11am

Math
9. If f is a linear function such that f(-1) = 5 and f(2) = -1, then f(x + 1) = A. -2x + 1 B. -2x + 3 C. x + 1 D. -2x + 2 E. 2x + 1
Thursday, July 31, 2014 at 10:46pm

business math
Lane French had a bad credit rating and went to a local cash center. He took out a $100.00 loan payable in two weeks at $105.50. What is the percent of interest paid on this loan?
Thursday, July 31, 2014 at 9:12pm

Math
9 is 1/3% of what number?? I need help
Thursday, July 31, 2014 at 6:08pm

Math
If the investment rises from $1000 to $5000, the percent is what from the original?
Thursday, July 31, 2014 at 6:05pm

math
A specially made pair of dice has only one- and two-spots on the faces. One of the dice has three faces with one-spot and three faces with two-spot. The other die has two faces with one-spot and four faces with a two-spot. One of the dice is selected at random and then rolled ...
Thursday, July 31, 2014 at 4:53pm

math
a bowl of fruit has 3 strawberries, 2 banannas and 1 apple. what fraction of the fruit is banannas?
Thursday, July 31, 2014 at 1:05pm

Math
A particle moves with a velocity of v(t)=3cos(2t) m/s along an axis. Find the distance traveled by the particle over the time interval 0 is less than or equal to "t", which is less than or equal to (pi/8)
Thursday, July 31, 2014 at 11:40am

Math
find the area of the region bounded by the function y=-x^2+5x-4 and the x-axis
Thursday, July 31, 2014 at 11:37am

Math
Of the books in a library, 1/3 came from Robbie's collection and 15 came from from Marta's. Of the rest 15 were Elena's, 1/5 were Winfield's, and 5 were purchased from the bookstore. How many books are there in the library?
Thursday, July 31, 2014 at 10:44am

math
Kendra bought 4 paintings and wants to hang them side by side on a wall in her bedroom. However, only 3 of the paintings will fit side by side on this wall. How many different ways can Kendra arrange 3 of the 4 paintings on the wall?
Thursday, July 31, 2014 at 10:23am

To Ms. Sue
Ms. Sue Hi! Im not sure if you will be able to help me with this one, since is Math homework, but this time is just to confirm if Im right the question is: What is 1,112,433 rounded to the nearest ten thousand? A. 1,120,000 B. 1,100,000 C. 1,110,000 D. 1,200,000 I picked B ...
Thursday, July 31, 2014 at 9:39am

math(precalculus)
Write the equation of a Rational Function satisfying given conditions. Has vertical asymptotes located at x-2 and x=-1 Has a horizontal asymptote located at y=0(x-axis) y-intercept:(0,2) x-intercept (4,0) R(x)= ??? what I did is, R(x)= ax+b/c(x-2)(x+1) then plug in (0,2), b=-...
Thursday, July 31, 2014 at 8:43am

math
find the sum of 3/6+4/10+3/30 and reduce to lowest term
Thursday, July 31, 2014 at 8:15am

Math
There are some rabbits and chickens in a farm. Together they have 35 heads and 94 feet. How many rabbits? How many chickens?
Thursday, July 31, 2014 at 7:33am

math
6. Joe played golf with Sam on a speacial par 3 course.. They played nine holes. The expected number of strokes on hole was 3. A birdie is 1 below par. On nine holes Frank made par on 1 hole, got 2 birdies, one eagle, four bogies and one double bogie. How many points above or ...
Thursday, July 31, 2014 at 6:17am

math
1. A submarine was suituated 800 feet below sea level. If it ascends 250 feet, what is it new position 2. Metal mercury at room temperature is a liquid. Its melting point is -39°C. The freezing point of alcohol is-114°C. How much warmer is the melting point of mercury ...
Thursday, July 31, 2014 at 5:57am

math
if 4,2x-4,......,64,21x+2 are the terms of GP . find the value of x ?
Wednesday, July 30, 2014 at 11:04pm

Math
If A=<2,1> and B=<-1,1>, find the magnitude and direction angle for -2A +3B Find all specified roots: Cube roots of 8i A parallelogram has sides of length 32.7cm and 20.2cm. If the longer diagonal has a length of 35.1cm, what is the angle opposite this diagonal?
Wednesday, July 30, 2014 at 8:23pm

Math
The water level (y) in a tank oscillates between 4 feet and 10 feet. It takes 20 seconds for the water level to go from 4 feet to 10 feet and seconds to go from 10 feet to 4 feet. At time(t)=0 seconds, the water level (y) is 10 feet. 1. Write the equation for the depth in the ...
Wednesday, July 30, 2014 at 8:19pm

math
you and afriend go to a county fair and each spin a wheel.The weel is divided into ten equal sections find the probability of the event. You win free admission and your friend loses
Wednesday, July 30, 2014 at 8:07pm

math
Of the books in a library, 1/3 came from Robbie's collection and 15 came from Marta's. Of the rest, 15 were Elena's 1/5 were Winfield's, and 5 were purchased from the bookstore. How many book are there in the library?
Wednesday, July 30, 2014 at 8:02pm

math
How many quarts of water must be added to 18 quarts of a 32% alcohol solution to dilute it to a solution that is only 12% alcohol.
Wednesday, July 30, 2014 at 7:08pm

math
1.A father can do a job in a certain number of hours. His son takes twice as long to do the job. Working together, they can do the job in 6 hours. How many hours does it take the father to do the job alone? A.9 B.18 C.12 D.10 3.David is 5 years older than Paul. In 5 years, ...
Wednesday, July 30, 2014 at 6:42pm

math
Avery paid $168 on a cell phone. What was the original price of the phone if he got it at a 30 percent discount?
Wednesday, July 30, 2014 at 6:32pm

math
This was on my test and have a few more question that is from my test. 18.The Sum of five unequal natural numbers is 90. The second largest of these five numbers can be at the most? A.19 B.41(41 is the right answer) C.44 D.43 E.42 please show work. 22.In what month does the ...
Wednesday, July 30, 2014 at 6:25pm

math
Michelle will divide 36 herbal tea bags and 48 mint tea bags among gift boxes. Each gift box will have the same number of herbal tea bags and the same number of mint tea bags. What is the greatest number of gift boxes Michelle can make?
Wednesday, July 30, 2014 at 5:50pm

math
I am not sure how to do these. 1. Simplify 4√6/√30 by rationalizing the denominator. Show your work. 2. Simplify (2√5 + 3√7)^2 Show your work. Justify each step.
Wednesday, July 30, 2014 at 4:22pm

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