Friday
July 3, 2015

Homework Help: Math

Branches of Math

Recent Math Questions

math
4d(2d-9) a.) 8d-36d b.) -d c.) -28d^2 d.) 8d^2-36d
Saturday, June 20, 2015 by alyssa

Math
A group of adults and kids went to see a movie. Tickets cost $7.00 each for adults and $4.50 each for kids, and the group paid $64.00 in total. There were 4 fewer adults than kids in the group. Find the number of adults and kids.
Saturday, June 20, 2015 by Jamie

math
-3m(m+8) a.) -3m^2 + 24 b.) 3m^2 - 24m c.) -24m^2 d.) -4m + 5
Saturday, June 20, 2015 by alyssa

math
write the LCD for each pair4/7, 1/8, 11/12
Saturday, June 20, 2015 by Dee365

Math
At the amusement park, you decide to ride the Ferris wheel, which has a maximum height of 50 meters and a diameter of 35 meters. It takes the wheel 5 minutes to make one revolution. If you start your ride at the midline and the ferris wheel rotates counter clockwise, how many ...
Friday, June 19, 2015 by Tiffany

Math
How do you solve the equation for finding the principal when the interest, rate, and time are given? I know the formula P=Interest over rate x time. how do you find the solution or amswer?
Friday, June 19, 2015 by John

Math - Statistics
The increase or decrease in the price of a stock between the beginning and the end of a trading day is assumed to be an equally likely random event. What is the probability that a stock will show a decrease in its closing price on eleven consecutive days? (Round to four ...
Friday, June 19, 2015 by Derrin

Graduated :math
yesterday ghana lotto winnig numbers was :07,67,76,71,69.please what are the numbers to win today.
Friday, June 19, 2015 by James

math
How many terms are there In an arithmetic Sequence with a common different of 4 and with the first and last term 3 and 59 Respectively.
Friday, June 19, 2015 by nicole

math
My digits are 6,0, and 5. I'm not divisible by 5. What number am I
Thursday, June 18, 2015 by CJ

math
can someone elxplai to me how to solve this differential equation. dy/dx= (x^2+3y^2)/2xy
Thursday, June 18, 2015 by Anonymous

Math
the ratio of Simone's pocket money to Fiona's pocket money was 2:3. After Fiona had received $5 from her mother, the ratio of Simone's pocket money to Fiona's pocket money became 4:7. how much pocket money did both of them have at first?
Thursday, June 18, 2015 by Minhthaominh

Math Trigonometry
A man is 6 ft. tall casts a shadow of 8 ft. find the angle of elevation of the sun.
Thursday, June 18, 2015 by Shelou

math
A fisherman has estimated that it takes 6 minutes to paint each square foot of the hull of his boat. How much time should the fisherman allow for the painting of the hull, if the hull were composed of two sides, each 31.5 feet by 8.00 feet? 1512.0 hours 25.2 hours 3024 hours ...
Thursday, June 18, 2015 by Lucy

math
Last month, Bill's electric bill was $80.77. This month, Bill's bill was $69.06. What is the percent decrease? 0.01 0.16 0.15 0.14 my answer is 0.15
Thursday, June 18, 2015 by Lucy

Math (Need help Urgent)
1. Graph the solution to the inequality y ≤ -2(x - 2)2 - 2 ?
Thursday, June 18, 2015 by Bailey

Math (PLEASE HELP!)
1. Suppose the height, h, in feet, of a trampolinist above the ground during one bounce is modelled by the quadratic function h(t) = -16t2 + 42t + 3.75 . For what period of time is the trampolinist at least 22 ft above the ground? Round your answers to the nearest hundredth. (...
Thursday, June 18, 2015 by Ashley

Math Geometry
The sun rises at 6am; At noon the sun is directly overhead. The height of a pole is 8m tall. What is the length of the shadow at 11am?
Thursday, June 18, 2015 by Seany

math
round off the following to nearest 10000 1,82,937
Thursday, June 18, 2015 by akhila

Math (Need help Urgent)
1. Fireworks are to be launched from a platform at the base of a hill. Using the top of the platform as the origin and taking some measurements, it was determined that the cross-section of the slope of one side of the hill is y=4x-12 . If the path of the fireworks is y= -x^2+...
Thursday, June 18, 2015 by Mary

math
Two men and six boys can cut a field in 3 hours. If the men work at 3/2 times that of the boys, how many men are required to cut the field in 2hours?
Thursday, June 18, 2015 by jay

Math (PLEASE HELP!)
1. Solve the system of equations by elimination.y=2x^2-2x-3 and y=-x^2-2x-3 2.The system of equations y=-5(x+4)^2-4 and y=8x^2+64x+124 has _____ solution(s). 3. Determine the value of k in y=kx^2-5x+2 that will result in the intersection of the line y=-3x+4 with the quadratic ...
Thursday, June 18, 2015 by Kaitlin

Math (PLEASE HELP!)
1. The UV index on a sunny day can be modelled by the function y= -0.15(x-13)^2+7.6 , where x represents the time of day on a 24-h clock and f(x) represents the UV index. At what time(s) was the UV index 7? 2. Determine if each system has one, two, or no solutions. (Show your ...
Thursday, June 18, 2015 by Adam

Math (PLEASE HELP!)
1. The sum of the squares of two numbers is 74 and the difference of their squares is 24. a) What system of equations models this situation? b) What are the two numbers? 2. For what value of b will the line y= -2x+b be tangent to the parabola y=3x^2+4x-1?
Thursday, June 18, 2015 by Anthony

Math
Nuts worth $3 per lb are to be mixed with 8 lb of nuts worth $4.25 per lb to obtain a mixture that will be sold for $4 per lb. How many pounds of the $3 nuts should be used?
Wednesday, June 17, 2015 by Mary

math
Brian has a bag that contains 14 red marbles and 12 yellow marbles. He selects a marble at random, and then, without replacing the first one, selects another marble at random. What is the probability that Brian selects a red marble and then a yellow marble? Round your answer ...
Wednesday, June 17, 2015 by courtney

Math
The cost of a video game is $29.95 and sales tax is 6%. About how much will the game cost, including tax?
Wednesday, June 17, 2015 by Anonymous

math
solve for x. 2450 * 4.80L= 19.2L * x
Wednesday, June 17, 2015 by Alicia Estrada

Math
Kristine made 4.9% of her 3-point shots last basketball season. She attempted forty 3-point shots in all. About how many points did she score from just 3-point shots?
Wednesday, June 17, 2015 by Anonymous

Math
Of the 597 students at Duzine Elementary School, 19% have a computer at home. About how many students have a computer at home?
Wednesday, June 17, 2015 by Anonymous

Math
There are 1,500 animals living at the zoo.15% of the animals have feathers. How many animals at the zoo have feathers?
Wednesday, June 17, 2015 by Anonymous

math
At a zoo, 1/3 of the animals are birds, 4/9 are mammals, and the rest are reptiles and amphibians. What fraction of animals at the zoo are reptiles and amphibians?
Wednesday, June 17, 2015 by cc

Finite Math
Can someone help me out with this! Thank you in advance :) Frank’s Fruit Stand sells fresh fruit as well as fruit dipped in chocolate and covered with chopped almonds. Each dipped banana requires 6 grams of chocolate and 3 grams of almonds to coat. It takes 6 grams of ...
Wednesday, June 17, 2015 by Katy

math
a final examination score in General maths is weighted four times as much as each test score If the student has a final exam score of 87% and test grades of 70% and 92%, then the mean score is
Wednesday, June 17, 2015 by jay

math
the hundred thousands digit of a six-digit even numbers is 3 more than the thousand digit,which is twice the ones digit.give at least four numbers that satisfy the given condition.
Wednesday, June 17, 2015 by louie

math
Andy wanted to match the profits from his lemonade project 3-fold. How much did he add to the proceeds? Lastly, Andy knows the proceeds are divided into 2 categories; travel and food. How much will each category receive?
Wednesday, June 17, 2015 by lauren

math help please
Sue Stitch buys a sewing machine. The price, including tax, is $575.00. She finances the sewing machine over 24 months after making a $25 down payment. The true annual interest rate is 15%. What are Sue's monthly payments (principal plus interest)? To the nearest penny, c...
Wednesday, June 17, 2015 by Anonymous

English
1. There are a house , trees and a shining sun in the first picture. 2. There is an English textbook in Picture 2. Do you like English. English is fun, isn't it? 3. There are two boys. What are they doing? They are playing with a ball in the sea. 4. A math textbook is in ...
Wednesday, June 17, 2015 by rfvv

math help please
Carol Byrd gets a student rate of $30.00 a month. There is a $250 deductible; but no coinsurance payment. She recently received treatment for a covered condition. The bill was $2,300.00. Carol's insurance company provided payment of 80% of the bill less the deductible. ...
Wednesday, June 17, 2015 by Anonymous

Math
At a community picnic, the following liquids were combined to make a punch: 3 gallons of water 1.5 gallons of cranberry juice 1 pint of strawberry juice 1 cup of grape juice 3 quarts of pomegranate juice How much punch was made in all for the community picnic? Give your answer...
Tuesday, June 16, 2015 by Anonymous

furthe math
find the gradent of the lind parallel to the line whose gradent is -3
Tuesday, June 16, 2015 by Anonymous

MATH
A 95% confidence interval for the mean of a normal population is found to be 17.6 <h 23.6 (h looking symbol couldn't find on keyboard ) what is the margin of error ? A 2 B 2.7 C 3 D 4 My answer is C. Am I right? But I think it could also be A.
Tuesday, June 16, 2015 by MARY

Math
there is a swimming pool, 3 meters in width and 4 meters in length. the owner wants to built a uniform deck around the swimming pool which is 3 times of the area of the pool. what's the width of the deck?
Tuesday, June 16, 2015 by Eric

math
what is the volume of the inside cylinder to the nearest whole number. use 3.14 for pi. r=8 h=18 the other top part is 5. my answer was 508.68 and rounding is 509
Tuesday, June 16, 2015 by siulanis perez

math
what is the surface area of the triangle prism. b=9 h=12 side=7 side=15 the answer is 413.39
Tuesday, June 16, 2015 by siulanis perez

math
what is the volume of the cylinder to the nearest whole number? use 3.14 for pi r=4 h=10 my answer is 502.65 and rounding it is 503
Tuesday, June 16, 2015 by siulanis perez

math
what is the volume of the rectangular prism w=7 l=23 my answer was 644
Tuesday, June 16, 2015 by siulanis perez

math
find the unknown lenght of a rectagular prism. Lenght=15 volume=180 ft square with= 4 ft my answer is x=120
Tuesday, June 16, 2015 by siulanis perez

math
I need help thank you what is the volume of the prism High= 12 Base=14 side= 9 my answer was 756.
Tuesday, June 16, 2015 by siulanis perez

math
solve each of the following initial value problems and plot the solutions for serveral variables of ynaught a)dy/dt = -y+5 I got to the point where I have: y= ce^-t + 5 they give y(0)=y(naught) so I tried plugging in 0,0 and got c to be -5. but the answer they give in the back...
Tuesday, June 16, 2015 by sara

MATH
A theater puts on a play and it's overhead is $750. It will charge adult's $5 per ticket and students $3 per ticket. The theater holds 200 people. What is the maximum profit? (How many adult tickets will be sold and how many student tickets will be sold?)
Tuesday, June 16, 2015 by Anonymous

math
the billions period has three different even digits whose sum is 12. each of the other places is occupied by 8. what is the number?
Tuesday, June 16, 2015 by Anonymous

math
There is 70m of fencing wire which is used to create 3 sides, brick wall is used for the 4th side. Calculate the maximum area of the rectangle, and state it's dimensions. (I got the correct maximum area but can't figure out how to get the side lengths.) I started with ...
Tuesday, June 16, 2015 by Side length of a question help

Math
The question is: A gardener wishes to create a rectangular bed. There are 70 meters of fencing wire which will be used to fence three sides of the garden bed, with a brick wall forming the fourth side. Calculate the maximum area of the garden bed that can be created, and state...
Tuesday, June 16, 2015 by Side length of a question help

Math
Think of a five-digit number composed of odd numbers. The thousands digit is two less than the ten thousands digit but two more than the hundreds digit. The tens digit is two more than ones digit which is four less than the hundreds digit?
Tuesday, June 16, 2015 by Maitess

math
Bob does 2/7 of a book in 1 hour.how long will he take to do the remaining work?
Tuesday, June 16, 2015 by Ahmed

Math
to determine the number of catfish in a pond, a game warden catches 131 catfish, tags them and throws them back into the pond. later, 20 catfish are caught, 10 of them are tagged. How many catfish would the game warden expect to be in the pond? 131/10 20/x
Monday, June 15, 2015 by Kayla

math
last one is $300
Monday, June 15, 2015 by sara

math
From the following data calculate final balance and forward it in the pay stubs. Beginning balance $2000 Jan 2 Deposit $500 Jan 10 Check written to Alex company $600 Jan 16 Check written to Angels Company
Monday, June 15, 2015 by sara

Math
What is the approximate average of these numbers: 9,18 and 31?
Monday, June 15, 2015 by Elizabeth

Math
Vicky bought 6 and 2/3 yards of one type of ribbon and 4 and 3/4 yards of another type of ribbon to make hair bows. If each bow takes 1 and 1/2 yards, how many hair bows can she make?
Monday, June 15, 2015 by Breanna

math
in a booster club, 1/8 of the members are men. How many male members are in the club.
Monday, June 15, 2015 by Anonymous

math
In a class of 40 students 18 passed economics 19 passed accounts 16 passed economics 6 passed mathematics only 9 passed accounts only 5 passed mathematics and accounts only 2 passed accounts and economics only. How many failed in all the papers? How many failed in economics? ...
Monday, June 15, 2015 by david

Math
Sorry I wasn't finished with the problem. Fijisawa Inc. is considering a major expansion of its product line and has estimated the following cash flows associated with such an expansion. The initial outlay would be $1,980,000, and the project would generate incremental ...
Monday, June 15, 2015 by Alicia

MATH
If the demand function for a commodity is given by equation p^2+12q=18 and the supply function is given by the equation 700-p^2+6q=0, find the equilibrium quantity and price
Monday, June 15, 2015 by tracy

Math
Fijisawa Inc. is considering a major expansion of its product line and has estimated the following cash flows associated with such an expansion. The initial outlay would be $1,980,000, and the project would generate incremental free cash flows of $490,000 per year for 6 years...
Monday, June 15, 2015 by Alicia

Math - NPV & IRR
East Coast Television is considering a project with an initial outlay of $X ( you will have to determine this amount) It is expected that the project will produce a positive cash flow of $60,000 a year at the end of each year for the next 16 years. The appropriate discount ...
Monday, June 15, 2015 by Callie

math
1000ml x 15 gtt x 1 hr = 31 gtt 8hr ml 60 min How do you do this???
Monday, June 15, 2015 by Brian

math 4
For the spinner above, the probability of landing on black is 1/2, and the probability of landing on red is 1/3, Suppose it is spun three times. What is the probability it will land on black all three times? ansewrs
Monday, June 15, 2015 by Anonymous

math
The greatest integer function ,shows below, is defined to be greatest________less than or equal to x. f(x)=[[x]]
Monday, June 15, 2015 by karla

Math
Internal rate of return What is the internal rate of return for the following project. An initial outlay of $9500 resulting in a single cash inflow of $16,281 in 7 years. Internal rate of return for the project is ___%
Monday, June 15, 2015 by Katie

Math-NPV
Net Present Value Big Steve's makers of swizzle sticks, is considering the purchase of a new plastic stamping machine. This investment requires an initial outlay of $110,000 and will generate net cash inflows of $17,000 per year for 11 years. a. what is the projects NPV ...
Monday, June 15, 2015 by Callie

Math
The Empire Carpet Company orders merchandise for $17,700, including $550 in shipping charges, from Mohawk Carpet Mills on May 4. Carpets valued at $1,390 will be returned because they are damaged. The terms of sale are 2/10, n30 ROG. The shipment arrives on May 26 and Empire ...
Monday, June 15, 2015 by Jay

math
For f(x) and g(x) given below, find the following, f(x) = (x-1)^5, g(x)=1-6x a) (f of g)(x)= -7776x^5 b) (g of f)(x)= -6x^5+30x^4-60x^3+60x^2-30x+7 c)f(f(x)= d) f^2(x)=(f*f)(xx)= Im stuck on c and d
Monday, June 15, 2015 by tracy

Math
How many different rectangles can you make with aperimeter of 12 matchstick
Monday, June 15, 2015 by Snethemba

Math
Piano lessons cost $30 per lesson. Find ordered pairs that represent the total cost for x number of lessons.
Monday, June 15, 2015 by Cordarius

Math
Between 4am and 5am, the water rises from 1.4m to 1.9m. Therefore, it rises 50 centimetres in 60 minutes. This means that the water rises approximately 0.83 centimetres every minute (50 ÷ 60 = 0.83cm). The water will have to increase 0.31m – or 31cm – from 1....
Monday, June 15, 2015 by Jess

Math
Anna is making a 20-metre long strips of $50 notes. Estimate the total value of the $50 notes Anna will use.
Sunday, June 14, 2015 by Angel

Math
How many people can fit in a 1.5 tonne elevator? Please show working out.
Sunday, June 14, 2015 by Angel

math
Q1.Plot three points with first coordinate equal to (-2.8) and join them.
Sunday, June 14, 2015 by Terrence

Math
My friend has $80 to spend on a fence for her rectangular garden. She wants to use cedar fencing which costs $8/foot on one side, and cheaper metal fencing which costs $2/foot for the other three sides. What are the dimensions of the garden with the largest area she can ...
Sunday, June 14, 2015 by Vin

math
using Rolles theorem to see if it can be applied to f. If so, find all numbers c such that f`(c)=0 f(x)=sin(x)+cos(x) interval [0,2pi]
Sunday, June 14, 2015 by Anonymous

math
Simplify the following expression to a single trigonometric term sin(360-x)*tan(-x)/cos(180 x)*(sin^2A cos^2A)
Sunday, June 14, 2015 by lesedi

math
I am a 6 digit number between 600 000 and 700 000.My ones digit and tens digit have no values.One of my digits has a value of 600 000.My ten thousands digit is one more than my thousands digit but if both digits are multiplied,the product is the same as the digit in the ...
Sunday, June 14, 2015 by mark chester

math trigonometry
Simplify the following expression to a single trigonometric term sin(360-x)*tan(-x)/cos(180 x)*(sin^2A cos^2A) answer= -sinx*-tanx/cosx*(1) after that how do i continue?
Sunday, June 14, 2015 by steve

Math
How many four digit numbers use the digit 7 two or more times?
Sunday, June 14, 2015 by Jason

Math
Byron’s house has a roof with dimensions shown. (Roof: 1m Height, 7m Hypotenuses, 12m length) He knows that the average rainfall in his suburb is 30cm per year. Byron would like to install a cylindrical rainwater tank to hold the water that runs off the roof. The tank is ...
Sunday, June 14, 2015 by Alex

Math
Byron’s house has a roof with dimensions shown. (Roof: 1m Height, 7m Hypotenuses, 12m length) He knows that the average rainfall in his suburb is cm per year. Byron would like to install a cylindrical rainwater tank to hold the water that runs off the roof. The tank is to...
Sunday, June 14, 2015 by Alex

math
how many times less is six in the tens place than six in the millions place in in the number 36432463
Sunday, June 14, 2015 by ella

math
A pair of fair dice is rolled. What is the probability of each of the following? (Round your answers to three decimal places.) (a) the sum of the numbers shown uppermost is less than 6 (b) at least one 6 is cast
Sunday, June 14, 2015 by Jay

math
Sharon made a scale drawing of a triangular park. The coordinates for the vertices of the park are: (– 10, 5) (15, 5) (10, 12) Her scale is 1 unit = 1 meter. What is the area of the triangular park in square meters?
Saturday, June 13, 2015 by carrie

math
The mean salary of 5 employees is $34600. The median is $35700. The mode is $3700. If the highest paid employee gets a $3900 raise, then what is the new mean, median and mode?
Saturday, June 13, 2015 by Jenna

Math
What is the absolute extrema of f(x)=sin^2(2x). Intervals [0,pi]
Saturday, June 13, 2015 by Jill

trigonometry math help
If cos 20=m determine the values of the following in terms of m. (a)sin 250 (b)sin 20 thanks
Saturday, June 13, 2015 by kem

math
An oil tank is 3m long, 3 m wide and 2 m high, when it is full of coconut oil specific gravity of 0.90, find the downward force at the bottom of the tank.
Saturday, June 13, 2015 by mmmm

math
tickets for children in a carnaval cost P 150.A teacher of a class of 48 pu[ils gets for the whole class but only 43 pupils buy.It is right for the teacher to say that she has P 6,350 for the tickets of the children?Why?
Saturday, June 13, 2015 by zerie kaye

math
tickets for children in a carnaval cost P 150.a teacher of a class of 48 pupils gets for the whole class but only 43 pupils buy.it is teacher right for the teacher to say that she has P 6,350 for the tickets of the children?why?
Saturday, June 13, 2015 by zerie kaye

Math
What are adjusted residuals measured in?
Friday, June 12, 2015 by Paris

math
There are 50 red and green marbles in a basket, if there are 30 red marbles. Find the probability that exactly 5 of the 10 are green, if 12 are drawn?
Friday, June 12, 2015 by lyn

Statistics
Please Help, thank you! A researcher measures the following scores for a group of people. The X variable is the number of errors on a math test, and the Y variable is the person’s level of satisfaction with his/her performance. (a) With such ratio scores, what should the ...
Friday, June 12, 2015 by baegirl

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