Homework Help: Math

Branches of Math

Recent Homework Questions About Math

Math
(-8)*7
Thursday, April 4, 2013 at 7:08pm

Math
(8/8)-(6/8+1/8)=
Thursday, April 4, 2013 at 6:52pm

math
A baseball diamond has 90 ft. between each base. A softball diamond has 60 ft between each base. How many yards longer is the space between bases on a baseball diamond than a softball diamond?
Thursday, April 4, 2013 at 6:47pm

Math
There Is 3/4 Of Class 218 Going To Art And 1/8 Going To Gym. The Rest Of The Class Is Going To Computer Class. What Fraction Of The Class Is Going To Computers ?
Thursday, April 4, 2013 at 6:43pm

math 140
7(3x+9)+(x+3)=11
Thursday, April 4, 2013 at 6:31pm

Math
The advertised size of a pizza is the length of its diameter. What is the area of the curst of a 16-ince pizza?
Thursday, April 4, 2013 at 6:28pm

math 140
4-5z=19
Thursday, April 4, 2013 at 6:12pm

math
Which number makes this inequality true? 5•9<3•m
Thursday, April 4, 2013 at 5:37pm

Math Stem and leaf plots
Stem Leaf 2 9 3 6 6 7 8 9 4 4 5 5 7 9 5 1 4 9 6 1 3 5 Between what numbers are most of the points earned? 6
Thursday, April 4, 2013 at 5:35pm

math
There are 12 girls in one of the fifth grade classes. The number of girls is two-thirds the number of boys, b. The number of boys can be found using the equation 2/3b=12. How many boys are in the class?
Thursday, April 4, 2013 at 5:22pm

math 114
A store mixes Kentucky bluegrass worth $11 per pound and ryegrass worth $14 per pound. The mixture is to sell for $13 per pound. Find out how much of each should be used to make a 588 pound mixture. How many pounds of the Kentucky bluegrass should be in the mixture?
Thursday, April 4, 2013 at 4:13pm

Math
Collision insurance is insurance that safeguards the owner of the vehicle from damages that occur from vandalism, weather, or theft. A. True B. False
Thursday, April 4, 2013 at 3:47pm

Math
A bag holds 2 yellow, 1 green, and 2 red marbles. If you were to draw a marble from the bag 150 times, and replace it after each draw, how many yellow marbles would you expect to draw? (1 point) A:50 B:60 C:30 D:38 I say it's B or A
Thursday, April 4, 2013 at 3:40pm

Math Statistical Concepts for Research
what is repeated sampling?
Thursday, April 4, 2013 at 3:36pm

Math
Factor the trinomial completely. y to the 3rd power minus 14y to the 2nd power plus 48y
Thursday, April 4, 2013 at 3:30pm

Math
Factor the trinomial completely. y to the 2power minus 2x minus 3=
Thursday, April 4, 2013 at 3:28pm

math
A plane travelling a velocity of 100km/h to south encounters aside wind blowing at 25km/h to the west what is its velocity to an observer on the ground?
Thursday, April 4, 2013 at 3:25pm

math
2a2+5a-25=0
Thursday, April 4, 2013 at 2:57pm

math
1/3and2/3 of the property costs 600 and 1200 respectivly what is the cost of total property
Thursday, April 4, 2013 at 2:38pm

Help? Math
Use equal intervals to make a frequency table for the average number of movies per person. You do not need to show tally marks. Country Average Number of Movies Turkey 0.5 Japan 1.2 UK 1.3 Finland 1.3 Austria 1.5 Germany 1.8 Spain 2.2 Sweden 2.2 Denmark 2.2 Switzerland 2.5 ...
Thursday, April 4, 2013 at 2:25pm

math help-emergency
I've been trying this alooot of times and couldn't get this answer in the book : 4(x-1)(2x+1) This is the problem: 9x^2-(x+2)^2
Thursday, April 4, 2013 at 2:23pm

Math
An airplane is flying at a velocity of 300km/h S30degW in a wind blowing at a velocity of 50km/h S20degE. What is the true speed and direction of the plane?
Thursday, April 4, 2013 at 2:21pm

math
How do I solve: 6x+4y>=80 6x+4y<=170
Thursday, April 4, 2013 at 2:19pm

math
Roger has three employees who earn $500, $550, and $700, respectively. how much does Roger owe for SUTA and FUTA in the first weeks? Assume a SUTA rate of $5.3% and a FUTA rate(after the company's credit for state unemployment tax) of .8%
Thursday, April 4, 2013 at 2:12pm

math
what percent of 6,350 is 1,397?
Thursday, April 4, 2013 at 1:55pm

math
find the value of x in the equation 6x +4(70-x)=300
Thursday, April 4, 2013 at 1:44pm

Math
Use equal intervals to make a frequency table for the average number of movies per person. You do not need to show tally marks. Country Average Number of Movies Turkey 0.5 Japan 1.2 UK 1.3 Finland 1.3 Austria 1.5 Germany 1.8 Spain 2.2 Sweden 2.2 Denmark 2.2 Switzerland 2.5 ...
Thursday, April 4, 2013 at 1:41pm

Discrete Math
8 trophies can be awarded to 30 people in how many different ways
Thursday, April 4, 2013 at 1:24pm

math
. A clothing store has everything on sale for between 10% and 40% off. This can be represented by the system of inequalities shown below, where y is the amount of discount and x is the cost of the clothing item.
Thursday, April 4, 2013 at 1:18pm

math
subtract 27 8/9 from 59 5/12 and reduce your answer to lowest terms.
Thursday, April 4, 2013 at 12:59pm

math
please check to see if I have this right. Divide and simplify to lowest terms. 2x^2-8x/5x-8 x-4/5x-8
Thursday, April 4, 2013 at 11:46am

math
solve and check your answer. Please check this for me to see if I have the right answer. __2__ = __3__ 1-x 1+x x= 1/5
Thursday, April 4, 2013 at 11:41am

Math- Partial Fractions
Decompose the following into partial fractions after factoring the denominator as much as possible. Please show some work so I can understand how you did it. 1)x^2/((x-1)(x^2+5x+4)) 2)(3x^3-5x^2+12x+4)/(x^4-16) 3)1/(x^2 (x+1)^2 ) 4)(x+1)/((x^2+1) 〖(x-1)〗^2
Thursday, April 4, 2013 at 11:24am

math
find the value of k such that the equation e^(2x)=krootx has exactly one solution.
Thursday, April 4, 2013 at 11:18am

math
will someone check to see if I have this question correct please. divide and simiplify to lowest terms. __2x^2-8_ divided by __x-4__ 5x-8 5x-8
Thursday, April 4, 2013 at 10:17am

Math Technology
A pilot is flying to a destination 700 miles away at a bearing of 105 degrees. The cruising speed of the plane is 500 mile per hour and the the wind is blowing between 20 and 30 miles per hour at a bearing of 30 degrees. At what bearing should the pilot aim the plan to ...
Thursday, April 4, 2013 at 10:14am

math
will smeone please help me solve this question. Simplify the expression. Write your answer in the lowest terms ans leave it in factored form. __3y__ + ___4__ y(4y-1) 4y-1
Thursday, April 4, 2013 at 10:13am

math
solution of 24.15 divided by 15
Thursday, April 4, 2013 at 9:54am

MATH
I have a test in about an hour and a half and am having some difficulty on the review the teacher gave us to help us prepare. Any help would be great! *Convert the polar equation to a rectangular equation. rsin(theta - Pi/4) =5 -The answer is given as y= x+5sq.rt.2 Also, I ...
Thursday, April 4, 2013 at 9:25am

Math
What is next number in series: 100 96 104 88 120 56
Thursday, April 4, 2013 at 9:12am

Math (Combinatorics)
A newly designed international airport is planning to label its gates. Each gate must be assigned a letter from the alphabet from A to M (13 in all), and a number from 1 to 15. To avoid confusion, any two gates must be assigned a different letter, or a different number (or ...
Thursday, April 4, 2013 at 9:06am

Math
How many 6 inch pieces can you cut from a spool of ribbon that is 10 yards long?
Thursday, April 4, 2013 at 6:49am

math
if 4/5 th strenght of a class is 80. what is the total strength of a class?
Thursday, April 4, 2013 at 2:49am

math
sunita is 5year older than kavita the sum of thair age after 10 year will be 55year their present age is kavita 15 year and sunita 20 year how?
Thursday, April 4, 2013 at 2:37am

math
a family walked 15 miles in one day . at that rate how many would they travel in 5 days? make a table to show your work
Thursday, April 4, 2013 at 1:58am

math
cot^-1(2tan(cos^-18/17))+tan^-1(2tan(sin^-18/17))=tan^-1300/161
Thursday, April 4, 2013 at 1:53am

math
If a cylinder’s height is four times its radius, if the cyclinder’s volume (ignoring the metals’ thickness) is 1000 cubic centimeters, and if the radius and hence the height could be in error plus or minus .2325%, determine the relative percentage error in the ...
Thursday, April 4, 2013 at 12:51am

Math
Ignoring the walls’ thickness, determine the outside dimensions that will minimize a closed box’s cost if it has a square base and top, if its volume is 32 cubic meters, and if the cost per square meter for the top, bottom, and sides respectively are $.03, $.04, and...
Thursday, April 4, 2013 at 12:49am

math
(3p^2-6pq+7q^2)-(5p^2-10pq+11q^2)
Wednesday, April 3, 2013 at 11:20pm

math
divide and simplify a-b/2a divide a^2-b^2/8a^3
Wednesday, April 3, 2013 at 11:18pm

math
help please!!!!! divide and simplify a/a-b b/a-b
Wednesday, April 3, 2013 at 11:17pm

Math Help please!
Find the area under the standard normal distribution curve for the following z-values: a. Between z= 0 and z = 2.01 b. Between z = 0 and z = -0.32 c. To the left of z = -0.73 d. To the right of z = 0.32
Wednesday, April 3, 2013 at 10:53pm

math
The circumference of a basketball is 26 inches. What is the approximate diameter of a basketball? (Use 3.14 for .)
Wednesday, April 3, 2013 at 10:50pm

math
Helen determined she walks about 1,800 steps per of a mile. How many steps did she take if she walked 5 miles?
Wednesday, April 3, 2013 at 10:48pm

math
Find all roots of the equation ln(4-x^2)=x correct to 8 decimal places. List all successive approximations.
Wednesday, April 3, 2013 at 10:28pm

math
if a board is 5\8 feet long and you want to cut it in 3 equal pieces, how long will each piece be?
Wednesday, April 3, 2013 at 10:27pm

math
It is noon. A secret agent is driving a jeep through the desert in the tiny principality of Alta Loma. He is 32km from the nearest point on a straight, paved road. Down the road 16km is a power plant in which a band of international terrorists has placed a time bomb set to ...
Wednesday, April 3, 2013 at 10:24pm

Math
A national survey shows that 13 out of every 25 middle school students have cell phones Patton MIddle School has 475 students about how many students can have cell phones 38 273 247 325 325?
Wednesday, April 3, 2013 at 10:19pm

Math
1.There are 240 boxes of caramel popcorn on the grocery store shelf. IF 2 out of every 15 boxes contain a secret decoer ring as a prize how many boxes can be expected to contain a secret decoder ring? A.30 B.24 C.16 D.32 D
Wednesday, April 3, 2013 at 10:07pm

math
35% of North Americans do not think that college education is a contributory factor to economic success. A random sample of seven North Americans is selected. Find the probability that: a. Exactly 3 people will agree with that position (taken by the 35% of the population) b. ...
Wednesday, April 3, 2013 at 10:03pm

MATH
An engineering consultant bids on jobs where he can make $10000 profit. If in a certain month, he has a 20% probability of getting a contract, 30% probability of getting 2 contracts, 40% probability of getting 3 contracts, and 10% probability of getting 4 contracts, what is ...
Wednesday, April 3, 2013 at 10:02pm

~ MATH
The average price of gasoline lately has been hovering lately at $3.80. What is the standard deviation if the probability that a gallon of gas costs less than $3.00 is 15%?
Wednesday, April 3, 2013 at 10:02pm

Math, Mathematics
A bag contains tiles with the letters P-R-O-B-A-B-I-L-I-T-Y. Tyler chooses a tile without looking and doesn’t replace it. He chooses a second tile without looking. What is the probability that he will choose the letter I both times?
Wednesday, April 3, 2013 at 9:56pm

math
how much would adam have to deposit in a saving account to earn 100 dollars in interest over 4 years at 5% simple annual interest rate.
Wednesday, April 3, 2013 at 9:54pm

Math
There are 18 green blocks in a bag. THere are 3 white blocks for every 2 green blocks. Which proportion can be used to find w the total number of white blocks in the bag A.18/w=3/2 B.3/8=2/w C.18/w=2/3 D.2/3=w/18 C JEremy drinks 2 pints of milk every 3 days how much milk would...
Wednesday, April 3, 2013 at 9:53pm

Okay Last Q's For today Ms. Sue MAth
There are 35 marbles in a bag: 9 blue marbles, 8 green marbles, 4 red marbles, 8 white marbles, and 6 yellow marbles. Find P(red). Write the probability as a fraction in simplest form, a decimal, and a percent. 2. A number cube with the numbers 1 through 6 is rolled. Find P(...
Wednesday, April 3, 2013 at 9:46pm

Math
4.Longview is located between Tyler and Marshall on the state highway. THe distance between Tyler and Longview is 45 miles. THe distance between Longview and Marshall is 25 miles. Which equation could be used to find d, the round trip between Tyler and Marshall? A.d=45+25 B.d=...
Wednesday, April 3, 2013 at 9:11pm

Math
The function r(w) = 2aw-2 + b + c where a, b and c are constants. You are given that r(1) = 5; r’(4) = 12 and r′’(2) = 18. By substituting for w in the above function and its derivatives or otherwise, show that the three given function values give rise to a ...
Wednesday, April 3, 2013 at 8:51pm

math check my answers
1. 2(x+3)squared-6x+5=0 Answer= 2xsquared+6x+23=0 2. 3xsquared-6x+5=-2(x+1)-10 Answer= 3xsquared-4x+17=0 How would I solve from this point?
Wednesday, April 3, 2013 at 8:37pm

math
A jara has 25 green grapes and 75 purple grapes. what is the probability that a purle grape will be chosen at random?
Wednesday, April 3, 2013 at 8:16pm

Math
The table below shows the relationship between the number of dozens and the number of cookies Number of dozens Number of cookies 5 60 7 84 9 108 1 132 Which equation could be used to find n, the number of cookies in d, the number of dozens A.n=10d B.n=d/10 C.n=12d D.n=d/12 C
Wednesday, April 3, 2013 at 7:29pm

Math
1.The cost of a soda at Paul's Pizza is $1.69. Refills are $0.45 each. Gabe ordered a cola and had it refilled 3 times. Which equation can be used to find d, the cost in dollars of Gabe's cola? A.d=3(1.69+0.45) B.d=1.69+3(0.45) C.d=1.69+0.45+3 D.d=3(1.69)+0.45 B 2....
Wednesday, April 3, 2013 at 7:16pm

math
the perimeter of a triangle is 79.75 inches. the second side of the triangle is half as big as the first side. the third side is 7.25 in greater than the first side what is the length of the longest side of the triangle?
Wednesday, April 3, 2013 at 6:51pm

3rd Grade Math
What is the sum of 4/10 and 55/100
Wednesday, April 3, 2013 at 6:50pm

math
Factor the following polynomials. 9. 3x2 – 12 10. 5x3y + 35x2y + 45xy
Wednesday, April 3, 2013 at 6:34pm

math
(6p + 4q)(-2p + 9q) simplify please help
Wednesday, April 3, 2013 at 6:31pm

math
(5t4 + 6t3 – 3t2 + 4t - 11) - (-9t4 – 6t3 + 5t2 + 3t + 8) Can somone help me ? Simplify . . .
Wednesday, April 3, 2013 at 6:31pm

to ms sue
Can you just get me started on my math plz
Wednesday, April 3, 2013 at 6:26pm

math sale taxes
Eva is making copies of her choir's performance schedule. The total bill for the copies Eva made came to $48.00 plus 8% tax. How much tax did she pay?
Wednesday, April 3, 2013 at 6:23pm

math
The school parking lot had room for thirty cars. If all the spaces except six were filled, what fraction of the parking lot was in use? If Mrs. Johnson parks in one of the empty spaces, how does the fraction change? Please answer and explain.
Wednesday, April 3, 2013 at 6:21pm

Math
I don't get this question! Please help. A pizza is divided into 8 slices. Diana eats 1/16 of the pizza in 5 minutes. At this rate, how many slices can she eat in one hour?
Wednesday, April 3, 2013 at 6:05pm

Math
What is the rotational symmetry as a fraction of a turn and the angle of the smallest turn of letter I
Wednesday, April 3, 2013 at 6:01pm

math
2 3/5 - 1 5/6 = ? 10 2/9 - 5 3/7 = ? 2 3/5 - 1 1/4 = ? Please help me.
Wednesday, April 3, 2013 at 5:59pm

Math
Maria has a slice of pizza that is 1/6 of the pizza. Ben has a slice of pizza that is 1/3 of the pizza. Maria's slice is bigger. Draw pizzas to show how this is possible.
Wednesday, April 3, 2013 at 5:52pm

Math
1. Which of the following is equivalent to 8 2/5? a.42/5 b.34/5 c.39/5 d.24/5 2. Which of the following fractions is between 3/5 and 2/3? a.3/6 b.3/4 c.5/8 d.7/10
Wednesday, April 3, 2013 at 5:51pm

math
You expect to receive $16,000 three years from today. If the present value of this amount is $12,701.13, what is the APY? What is the monthly return?
Wednesday, April 3, 2013 at 5:26pm

math
Rachel cut a length of rope 4 1/3 meters into two pieces. The length of one piece of rope is 2 1/2 meters. What is the length of the second piece of rope. Please answer and explain.
Wednesday, April 3, 2013 at 5:23pm

math
why is 1/6 greater than 1/8 but less than 1/3? EXPLAIN
Wednesday, April 3, 2013 at 5:05pm

math x
8. The Chicago Public School system has about 680 schools. About 130 of the schools will be closed. If five schools are chosen at random find the probability that at least 3 of them will be closed.
Wednesday, April 3, 2013 at 4:59pm

math
Danny has 75 marbles in red color and blue color. He found out number of red marbles is 15 less than twice of the blue marbles. What are the numbers of red and blue marbles does danny have?
Wednesday, April 3, 2013 at 4:50pm

math
the dollar card is $3 per month and 10cents per minute How much would the monthly bill for $85 minutes be with the dollar card?
Wednesday, April 3, 2013 at 4:37pm

math
What is 3 fracture each fourth...5 fracture each half...3 fracture each third?
Wednesday, April 3, 2013 at 4:30pm

math
32 subjects in a study were recruited by advertisements to participate in a study of attitudes and values toward wine. What assumption are you making about these subjects? (I noticed that the problem does not state it is a SRS.)
Wednesday, April 3, 2013 at 4:23pm

math
Make a table and graph the function: Yards are a function of feet.
Wednesday, April 3, 2013 at 4:21pm

Math
Solve Mentally with conversion to decimals, no calculation of common denominators. Place the following in ascending order(smallest to largest) 1/4 8/9 7/10 9/21 7/16 2/3 2/47 5/6 3/4 3/5 1/13 1/8
Wednesday, April 3, 2013 at 3:57pm

math
The average price of gasoline lately has been hovering lately at $3.80. What is the standard deviation if the probability that a gallon of gas costs less than $3.00 is 15%?
Wednesday, April 3, 2013 at 3:52pm

math statistic
The Chicago Public School system has about 680 schools. About 130 of the schools will be closed. If five schools are chosen at random find the probability that at least 3 of them will be closed.
Wednesday, April 3, 2013 at 3:51pm

Math
"Jack has a collection of nickels and quarters. He has a total of 50 coins worth $10.30. How many of each coin does he have?" I got the answer of 39 quarters and 11 nickels by trial and error. Can someone tell me the correct way to set the problem up? Thank you.
Wednesday, April 3, 2013 at 3:06pm

math
How do I find the sum of 256,14,632, and 25
Wednesday, April 3, 2013 at 2:56pm

math
a recipe call for 8/9 of a cup of granola. you only want to make 1/9 of the recipe. How much granola do you need?
Wednesday, April 3, 2013 at 2:55pm

math
A diagram shows the design of the 12 in quilt (12" x 12") block that a quilter is sewing. What are the dimensions of each triangle in the quilt block? What are the dimensions of each triangle to the nearest tenth of an inch?
Wednesday, April 3, 2013 at 2:33pm

math
Operations with radical expressions: Simplify each quotient. -3/sq rt 2 + sq rt 5
Wednesday, April 3, 2013 at 2:04pm

math
three frinds are sharing 36 cookies . jerry wants 25% of the cokies , gary wants 1/2 of the cookies and terry wants o.75 of the cookies . how many cookies does each person want? can they get what they want ? explain your answer
Wednesday, April 3, 2013 at 1:37pm

MATH please help
An object at rest begins moving horizontally on the x-axis, starting at position x(t) = 0 feet at time t = 0 seconds.Suppose, after exactly 2 seconds we measure the position of the object to be 3 feet to the right of the origin AND measure the object to be moving to the ...
Wednesday, April 3, 2013 at 1:11pm

math
The sides of a rectangle are in a ratio. What is the length of the shorter sides of the rectangle if its perimeter is 42 cm?
Wednesday, April 3, 2013 at 1:09pm

Math
A carpenter agrees to work under the conditions that he is to be paid $5.50 every day he works, but must pay $6.60 every day he does not work. At the end of 30 days he finds he has paid out as much as he has received. How may days did he work?
Wednesday, April 3, 2013 at 12:50pm

math
if sin^-1>cos^-1 then x belongs to which interval
Wednesday, April 3, 2013 at 12:15pm

math
tan^-1a+tan^-1b+tan^-1c=pi,yhen prove that a+b+c=abc
Wednesday, April 3, 2013 at 12:12pm

math
Two fair dice, one blue and one red, are tossed, and the up face on each die is recorded. Define the following events: E : { The sum of the numbers is even } F : { The numbers are equal } Find the following probabilities: (a) P(E) = (b) P(F) = (c) P(E|F) = Are events E and F ...
Wednesday, April 3, 2013 at 12:03pm

Math
A merchant visited 3 fairs. At the first, he doubled his money and spent $30; at the second he tripled his money and spent $54; at the third, he quadrupled his money and spent $72, and then had $48 left. How much money had he at the start?
Wednesday, April 3, 2013 at 11:50am

math
(6p + 4q)(-2p + 9q) simplify help
Wednesday, April 3, 2013 at 11:47am

math
(8x^4 - 6x^2) + (2x^2 - 8)(2x^2 + 8) Simplify help
Wednesday, April 3, 2013 at 11:46am

math
(5t^4 + 6t^3 – 3t^2 + 4t - 11) - (-9t^4 – 6t^3 + 5t^2 + 3t + 8) Simplify Help
Wednesday, April 3, 2013 at 11:45am

math
(7b + 6c)(-2b + 10c) Simplify
Wednesday, April 3, 2013 at 11:44am

math
What is the value of t in the solution to this systems of linear equations? 2s – 3t = –1 3s – 4t = 0 a)–5 b)3 c)-7/3 d)4
Wednesday, April 3, 2013 at 11:42am

Math
30 flasks--10 full, 10 half-empty, and 10 entirely empty--are to be divided among 3 sons so that flasks and contents should be shared equally. How may this be done?
Wednesday, April 3, 2013 at 11:30am

math
PLEASE HELP!!!(: There are 9 red gum balls, 5 green gum balls, 8 yellow gum balls, and 8 blue gum balls in a machine. Find P(green, then yellow). (1 point) A. 400 over 900 B. 5 over 30 C. 8 over 30 D. 40 over 870
Wednesday, April 3, 2013 at 11:16am

Math
How would I find the confidence level (in %) if I am given the standard deviation, size of the random sample, and confidence interval?
Wednesday, April 3, 2013 at 10:51am

math
Am I missing something here. They way I read this is that the answer is already given 9.5m. or are they after the angle of the ground to guy wire? The guy wire is 13.4m long. It supports a vertical power pole. The wire is fastened to the ground 9,5m from the base of the 8.7m ...
Wednesday, April 3, 2013 at 10:14am

Math
A goat is tethered (tied up) to a stake in the ground with a 5 m rope. The goat can graze to the full length of the rope a full 360 around the stake. How much area does the goat have in which to graze?
Wednesday, April 3, 2013 at 9:57am

Math (Percentage)
In a class of 40 , 12 students failed the exam. What was the passing rate of the said class?
Wednesday, April 3, 2013 at 9:27am

math
Assume that aclass room is arectangular box where the floor is 8metres long and 6metres wide.If the distance from the floor to the ceiling(height of the room)is 3metres,find the diagonal distance between acorner of the room on the floor and the opposite corner on the ceiling.
Wednesday, April 3, 2013 at 7:49am

math (Algebra)
(c+x)squared ----------------- 2y c= -8 x= 10 y= 6
Wednesday, April 3, 2013 at 7:49am

Math (Algebra)
A jar contains x nickels and y quarters only. What percentage of the total number of coins are quarters?
Wednesday, April 3, 2013 at 6:44am

Math
A newly designed international airport is planning to label its gates. Each gate must be assigned a letter from the alphabet from A to M (13 in all), and a number from 1 to 15. To avoid confusion, any two gates must be assigned a different letter, or a different number (or ...
Wednesday, April 3, 2013 at 6:43am

Help!!!! math
An hiking group wanted to travel a long chapter of the Appalachian Trail for 4 days. They planned to hike 6 hours per day and wanted to complete a trail chapter that was 60 miles long. what rate of speed would they have to average to complete the trail chapter as planned?
Wednesday, April 3, 2013 at 4:36am

math
tan^-1(x/√a^2-x^2)=sin^-1(x/a)
Wednesday, April 3, 2013 at 3:41am

math
Flight Path. In this problem you will use a cosine function to model the flight path of a plane that begins its descent from 20000 ft when it is 45 miles from the airport. Find the fuction p(x)= ACos(wx)+B that that gives the altitude in ft when the plane is x miles from the ...
Wednesday, April 3, 2013 at 3:02am

math
7.49plus2.05divide0.50less0.59
Wednesday, April 3, 2013 at 1:56am

Math
If a salesman sold 2 cars in his first month, 8 cars in his second month, and 32 cars in his third month, using the same sequence how many cars would he sell in month 4, month 5, and month 6
Wednesday, April 3, 2013 at 12:59am

Math-Calculus
Consider two ships which are joined by a cable attached to each ship at the water line. Suppose the two ships are 200 metres apart, with the cable stretched tight and attached to a pulley which is anchored halfway between the ships at a depth of 45 metres. If one ship moves ...
Wednesday, April 3, 2013 at 12:28am

Math
I need to verify this equation and I get stuck after trying everything I can think of. Help! cos(4x)=4[sin(x)cos(x)-sin^3(x)cos(x)]
Tuesday, April 2, 2013 at 11:49pm

math 141
Three machines turn out all the products in a factory, with the first machine producing 40% of the products, the second machine 35%, and the third machine 25%. The first machine produces defective products 12% of the time, the second machine 3% of the time and the third ...
Tuesday, April 2, 2013 at 11:20pm

math
George painted his room yesterday. he use 1/8 of the paint in can in the morning and 5/8 of the paint in the afternoon.his much of the did he use?
Tuesday, April 2, 2013 at 11:19pm

math
George painted his room yesterday. he use 1/8 of the paint in can in the morning and 5/8 of the paint in the afternoon.his much of the did he use?
Tuesday, April 2, 2013 at 11:18pm

math
find the solution of the following system of equations x-y=0 x+y=4
Tuesday, April 2, 2013 at 11:14pm

math
Jeremiah made a pitcher of iced tea. Which is most likely the capacity of the pitcher?
Tuesday, April 2, 2013 at 10:47pm

math
Subjects were asked to taste two wine samples in sequence. Both samples given were the same wine although subjects were expecting to taste two different samples. Of the 32 subjects in the study, 22 selected the wine presented first when presented with two identical samples. A...
Tuesday, April 2, 2013 at 10:47pm

math
a) A linear function f(t)=b + mt has a slope of -4 and vertical intercept of 20. Find its equation. b) An exponential function g(t)=Ca^t has a decay factor of 1/4 and an initial value of 20. Find its equation. Plot both functions
Tuesday, April 2, 2013 at 10:44pm

finite math
What is the present value of an ordinary annuity which has payments of $1100 per year for 19 years at 5% compounded annually.
Tuesday, April 2, 2013 at 10:33pm

math
the length of a photograph is 1 cm less than twice the width. the area is 28 cm squared. find the dimensions of the photograph.
Tuesday, April 2, 2013 at 10:28pm

math
When at rest, two trains have sirens that emit a frequency of 300 Hz. The trains travel toward one another and toward an observer stationed between them. One of the trains moves at 30.0 m/s, and the observer hears a beat frequency of 3.6 beats per second. What is the speed of ...
Tuesday, April 2, 2013 at 10:25pm

Math
Triangle Lmn is similar to triangle xyz. Triangle LMN has a side of 5 and 3. The scale factor of triangle Lmn to triangle xyz is 2:5. What is triangle xyz's length? Helppppp Meeeeeeeeeee!!!
Tuesday, April 2, 2013 at 10:21pm

math
Identify the initial value and growth or decay factor in each of the following exponential functions: a) y= 350 x 5^x b) Q= 25000 x (1/2)^t c) P=(7 x 10^3) x 4^t d) N= 5000 x (9/10)^t
Tuesday, April 2, 2013 at 10:18pm

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