Saturday
May 30, 2015

Homework Help: Math

Branches of Math

Recent Math Questions

Math
1. Ashlyn took out a loan for $700 to buy a new Tv. The bank to going to charge her 3% compound interest. What amount will Ashlyn owe the bank after 3 years 2. Determine the value of a $100 investment earning 10% compound interest over 2 years.
Wednesday, April 1, 2015 at 6:18pm

math
solve the equation 6y-2=8y-5
Wednesday, April 1, 2015 at 5:58pm

Math
A television company agrees to establish a community antenna in a new suburb at a charge of $5 each for 1000 subscribers or less.To encourage more subscribers,it is agreed to give a discount of $ 0.10 to each subscriber for every additional 10 subscribers in excess of 1000. ...
Wednesday, April 1, 2015 at 5:15pm

7TH MATH HELP
3. What is the correct description for the translation of A to A'? A(10, 3) A'(1, 6) right 9; up 3 left 9; down 3* right 9; down 3* left 9; up 3 The point C(x, y) is reflected over the x-axis. Use arrow notation to describe the original point and its reflection. (1 ...
Wednesday, April 1, 2015 at 5:08pm

Math / Algebra 2
Use trigonometric identities to solve each equation for the given domain. sin 2θ = -cos θ for 0 ≤ θ < 2π *Anyone who has any idea which identity to use is welcome to help.
Wednesday, April 1, 2015 at 4:50pm

Math
What part of a yard is 1 1/2 feet?
Wednesday, April 1, 2015 at 4:49pm

Math
the car on the hydraulic lift in figure 22-2 has a weight of 16,170 N. Piston B has a surface area of 5,005 centimeters cubed; Piston A has an area of 65 centimeters cubed. What force must be applied to Piston A to lift the call? I tried to do 16,170 by 5,005 but I dont think ...
Wednesday, April 1, 2015 at 4:29pm

Math
Mrs. Birdsong charged a total of $3,450 for 30 pieces of her pottery. She charged the same amount for each of the remaining pieces. How much did she charge per piece if pottery?
Wednesday, April 1, 2015 at 4:08pm

Math
Are the following expressions equivalent? Prove your answer. 5(3x+2) and 15x+10
Wednesday, April 1, 2015 at 3:57pm

Math
If it costs $500 per ton to ship a vehicle, how much will it cost to ship a minivan that weighs 4,500 pounds?
Wednesday, April 1, 2015 at 3:42pm

Math
Of 1901 people who came into a blood bank to give blood, 315 people had high blood pressure. Estimate the probability that the next person who comes in to give blood will have high blood pressure
Wednesday, April 1, 2015 at 3:10pm

math
The vertices of ^ABC are A (2,-5), B(-3,5) AND c(3,-3) The Triangle is reflected over the x-axis. I think the answer would be A(2,-5), B(-3,5), C(3,-3) ->(-2,-5), (3,5), (-3,-3)
Wednesday, April 1, 2015 at 2:59pm

math help
Given DC = 7, CB = 8, AB = 1/4 AD, and ED = 4/5 AD, find FC. Express your answer as a decimal. not sure how to tackle this one
Wednesday, April 1, 2015 at 2:14pm

math
1.A square has side lengths of 3 units. One of its vertices is at (5, -2). Which of the following are possible coordinates of another vertex? a)(9,-2) b)(8,-2) c)(5,5) d)(5,-1) idk can someone help i am confused
Wednesday, April 1, 2015 at 1:55pm

math help needed bad
I'm really confused on how to answer this question. Can someone help me to figure this out? Thank you A survey about the student government program at a school finds that of 245 students: -218 like the program -27 students think this program is unnecessary. If a circle ...
Wednesday, April 1, 2015 at 1:37pm

Math
What is the correct description for the translation of A to A? (10,3)-> (1,6) right 9; up 3 left 9; down 3 right 9, down 3 left 9; up 3 I think the answer is right 9;up 3
Wednesday, April 1, 2015 at 12:07pm

math
Solve for x and y simultaneously x+y=2 and 3x^2+4xy+y^2=6
Wednesday, April 1, 2015 at 11:14am

Math
The point C(3, -1)is translated to the left 4 units and up 1 unit. How do I write a rule to describe the translation?
Wednesday, April 1, 2015 at 9:11am

MATH
AB and CD are two chords equidistant from the center O. OP is the perpendicular drawn from center O to AB. if CD=6 cm. find PB.
Wednesday, April 1, 2015 at 3:33am

MATH
If the total surface area of a sphere is 5544 cm 2, find the diameter of the sphere.
Wednesday, April 1, 2015 at 3:31am

MATH
A cardboard sheet is of rectanguler shape with dimensions 48m x 36m. From each of its corners,a square is cut off so as to make an open box. if the side of the square of the square is 8m, find the volume and lateral surface area of the box.
Wednesday, April 1, 2015 at 3:00am

Math
Find all the possible values of the expression. sin^-1 -(square root3/2) Ans: 4π/3 + (2π)n 5π/3 + (2π)n
Wednesday, April 1, 2015 at 1:04am

Math
Your store’s average basket (transaction) size for the month of March was $11.50 and you believe the average basket size will remain the same for your store in April. One of your hourly employees had an average basket size of $9.00 for the month of March and averaged 125 ...
Wednesday, April 1, 2015 at 12:49am

easy math
√(100 - 20√5 + 5 + 15 - 6√15 + 9) solve.
Tuesday, March 31, 2015 at 11:58pm

math
I can't figure this one. At a math contest,12 problems were given. Five points were awarded for each correct answer,and two points were deducted for each incorrect answer. Matt's score was 39.How many correct answers did he have.5-2(12-5)=39,5-24+2=39,7=63,9
Tuesday, March 31, 2015 at 11:57pm

Math
I dont understand how to do this problem if someone can please help me to figure it out thank you. A survey about the student government program at a school finds that of 245 students: -218 students like the program -27 students think the program is uncessary If a circle graph...
Tuesday, March 31, 2015 at 11:14pm

Math
Which of the following types of information is NOT suited for display on a scatter plot? A. Relationship between age and number of books read in a year. B. Relationship between height and shoe size. C. Relationship between calories sonsumed and body weight. D. Relationship ...
Tuesday, March 31, 2015 at 11:05pm

Math
What percentage of the students who chose biking were girls? Chart Walking Boys= 3 Girls=6 Biking Boys=5 Girls=3 Skateboarding Boys=2 Girls=1 A. 30% B. 37.5% C. 40% D. none of these Is the answer D? Thank you
Tuesday, March 31, 2015 at 10:47pm

Math
Find the value of the following matrix's. 1.) [-5 2 -8 -7] 2.) [3 -4 7 9]
Tuesday, March 31, 2015 at 10:38pm

Math
What percentage of the boys chose walking? Chart Walking Boys= 3 Girls=6 Biking Boys=5 Girls=3 Skateboarding Boys=2 Girls=1 A. 30% B. 45% C. 25% D. None of these Is the answer A? Thank you
Tuesday, March 31, 2015 at 10:20pm

math
What is 5/9, 15/16, 1/4, and 9/10 put in order from smallest to largest?
Tuesday, March 31, 2015 at 10:12pm

Math
What percentage of the total students chose skateboarding? Chart Walking Boys= 3 Girls=6 Biking Boys=5 Girls=3 Skateboarding Boys=2 Girls=1 A. 10% B. 20% C. 30% D. None of these Is the answer D? Thank you
Tuesday, March 31, 2015 at 10:12pm

Math
In a recent student government election , the ratio of students who voted for the winner to all the students who voted was 0.84. The number of students who voted was 75. How many votes did the winner get ?
Tuesday, March 31, 2015 at 9:45pm

math
Pre algebra what should you do if you cant sleep
Tuesday, March 31, 2015 at 9:14pm

math
I need a formula. At a math contest,12 problems were given. Five points were awarded for each correct answer, and two points were deducted for each incorrect answer. Matt's score was 39. How many correct answer did he have
Tuesday, March 31, 2015 at 9:14pm

math
The distance to the nearest 100,000 km from the earth to the moon is given as 400,000 km. The average speed to the Nearest 500km/h is 3500km/h. Calculate the least and greatest time it takes the rocket to reach the moon I figured out the formula speed = distance / time but ...
Tuesday, March 31, 2015 at 8:52pm

MATH
How could you find out which weighs more, one ton of pillows or one ton of bowling balls?
Tuesday, March 31, 2015 at 8:16pm

Math
Sarah is lining a square tray with 1 inch square tiles. The side length of the tray is 9 inches. How many tiles does Sarah need?
Tuesday, March 31, 2015 at 8:10pm

MATH
David took a survey of 12 people to find out what their favorite animal is. Of those, ⅓ of the people said they liked dogs best. How can you find out him many people liked dogs best?
Tuesday, March 31, 2015 at 8:08pm

MATH
I'm sure what if this is the right answer that the question is looking for. since my eng. not that good i have hard time understanding. Please help me. Question: write a situation that can be modeled by the following linear system. Explain what each variable means, then ...
Tuesday, March 31, 2015 at 7:59pm

Math
Between 6 A.M and 10 A.M the temperature rose by 5F. Between 10 A.M and 2 P.M the temperature rose by 6F. Between 2 P.M and 6 P.M the temperature rose by 0C. Would you be able to tell how much the temperature rose since 6 A.M? Why or why not?
Tuesday, March 31, 2015 at 7:57pm

Math
A bathroom has a length of 10 feet and a width of 9 feet.Kade wants to put down tiles on the floor that are each 1 square foot.Then he will put a baseboard along the edges where the walls meet the floor.How many tiles does Kade need?How much baseboard does he need?
Tuesday, March 31, 2015 at 7:44pm

math - linear equation
How do I write a system of equations that is linear and graph? Thanks
Tuesday, March 31, 2015 at 6:19pm

Math
Lamar wants to slice a 35-ounce tomato and a 28-ounce tomato into pieces of the same weight. He finds the greatest common factor of the tomato weights to determine the weight of each piece. What is the greatest common factor of 35 and 28? Show your work. Use your answer to ...
Tuesday, March 31, 2015 at 6:14pm

Math
if a recipe of 2 dozen cookies calls for 3 teaspoons of vanilla how much vanillia will i need for 50 cookies ? 7.3 1.5 teaspoon vanilla= one dozen x 4 dozens = 2.00 missing cookies. 12.5 x 4 = 50 .5x4= 2.00 divided by 1.5 = 1.3 +6 (2servings of 3 teaspoons) equals 7.3
Tuesday, March 31, 2015 at 6:09pm

math help
how do i solve for x and y x+y=2 and 3x^2+4xy+y^2=6
Tuesday, March 31, 2015 at 5:18pm

Math
Can mean be found from a histogram? Explain
Tuesday, March 31, 2015 at 4:59pm

Math
4. Which explains why the sequence 81, 3, 1/9,... is arithmetic or geometric? A)The sequence is arithmetic because it decreases by a factor of 1/27 B)The sequence is geometric because it decreases by a factor of 1/27 C)The sequence is arithmetic because it decreases by a ...
Tuesday, March 31, 2015 at 4:21pm

Math
When interest is compounded once a year, the formula for compound interest is A=P(1+r)t in the formula, A represents the amount of money after t years, p represents the principal, and interest rate written as a decimal. If p=$500 r=3% and t=2 What is the amount of compound ...
Tuesday, March 31, 2015 at 4:02pm

Math
1. Write a rule for the sequence. 8, -1, -10, -19 A) Start with 8 and add -9 repeatedly. B) Start with -9 and add 8 repeatedly. C) Start with 8 and add 9 repeatedly. D) Start with 8 and subtract -9 repeatedly.
Tuesday, March 31, 2015 at 3:58pm

Math
Nina wants to buy a bicycle that costs $150.00. She had saved 6% of the total cost of the bike. How much money has Nina saved? How much does Nina have left to save before she can buy her bike?
Tuesday, March 31, 2015 at 3:49pm

math
equilateral triangle is increasing at a rate of √3 cm/min. find the rate at which its area increasing when its edge is 12 cm long
Tuesday, March 31, 2015 at 3:38pm

math
Each side of an equilateral triangle is increasing at a rate of √3 cm/min. find the rate at which its area increasing when its edge is 12 cm long
Tuesday, March 31, 2015 at 3:33pm

math
Each side of an equilateral triangle is increasing at a rate of √3 cm/min. find the rate at which its area increasing when its edge is 12 cm long
Tuesday, March 31, 2015 at 3:16pm

Math
2. Given the data 12,39,21,18,24,17,12,25 a what is the outlier in the data? b what is the mean with the outlier? c what is the mean without the outlier A. 12;21;18.4 *** B. 12; 18.4; 21 C. 39; 21; 18.4 D. 39; 18.4; 21
Tuesday, March 31, 2015 at 2:34pm

BUS math
Bari Jay a gown manufacturer received an order for 600 prom dresses from China. Her cost is $35 a gown. If her markup based on selling price is 79%, what is the selling price of each gown? Round to the nearest cent.
Tuesday, March 31, 2015 at 2:03pm

Math
1. What are the mean, median, mode, and range of the data set given the altitude of lakes in feet: -11, -28, -17, -25, -28, -39, -6, and -46? A. Mean = -25, Median = - 26.5, Mode = -28, Range = 40*** B. mean = -25; median = -40; mode = -26.5; range = 28 C. mean = -26.5; median...
Tuesday, March 31, 2015 at 1:51pm

business math
Anny invests $8,500, at 6% interest, compounded quarterly for 12 years?
Tuesday, March 31, 2015 at 1:03pm

math
given that the rectangle above has a perimeter of 34 units, find m<klj. round the answer to the nearest hundredth
Tuesday, March 31, 2015 at 12:58pm

Math
Juanita invests $3,500, at 8% interest, compounded annually for 4 years?
Tuesday, March 31, 2015 at 12:36pm

MATH
716-{(1950/5 of 3)-(4+217/7)}
Tuesday, March 31, 2015 at 10:42am

math help
How do i solve for x (x^2-9)(2x+1)=0
Tuesday, March 31, 2015 at 9:42am

math help
how do prove that this equation has rational roots for all rational values of K 3x^2+kx-k=3x
Tuesday, March 31, 2015 at 9:39am

Math
Point M(4, 3) is translated according to the rule (x, y) (x+2,y-5). What are the coordinates of of M?
Tuesday, March 31, 2015 at 8:46am

Math, statistics
Problem 1: The PDF of exp(X) (6/6 points) Let X be a random variable with PDF fX. Find the PDF of the random variable Y=eX for each of the following cases: For general fX, when y>0, fY(y)= Solution: f_x(ln(y))/y When fX(x) = {1/3,0,if −2<x≤1,otherwise, we ...
Tuesday, March 31, 2015 at 8:34am

7th grade math (probability)- additional questions
Here are additional problems that weren't included in original post from 3/30. 4. There are 5 different color jolly ranchers in a bag - 10 cherry, 15 watermelon, 12 grape, 10 apple, and 8 raspberry. What is probability that you'll choose raspberry? Ans: 8/55 =.1454 = ...
Tuesday, March 31, 2015 at 7:25am

Math
Given an iterated map, ie. x_n+1 = 3* x_n / (x_n +1), how do we find all of its fixed points?
Tuesday, March 31, 2015 at 2:35am

math
square root of (24)(72)
Monday, March 30, 2015 at 11:27pm

5th grade (math)
The grass in Jenna's lawn has not grown in too well. She plans to throw more seed onto her lawn. A 1-lb bag of seed costs $22 and covers 60m square. A 5-lb bag of seed costs$88 and covers 300m square. how much will jenna spend on grass seed for her lawn? pls help!!
Monday, March 30, 2015 at 11:26pm

math
Five friends shared 2 packs of paper equally. What fraction of a pack of paper did each friend get? I think 2/5
Monday, March 30, 2015 at 11:10pm

math
square 0f (24)(72)
Monday, March 30, 2015 at 10:17pm

math
Vanilla Box Company is going to make open-topped boxes out of 17 × 13-inch rectangles of cardboard by cutting squares out of the corners and folding up the sides. What is the largest volume box it can make this way? (Round your answer to one decimal place.)
Monday, March 30, 2015 at 10:14pm

math
The ratio of Maya’s beads to Kayla’s beads was 12:7. After Maya bought another 28 beads and Kayla gave away 3/2 beads, 5/7 of Kayla’s beads were left. a) How many more beads did Maya have than Kayla in the beginning? b) Find the new ratio of Maya’s beads to...
Monday, March 30, 2015 at 10:07pm

math
letitia is making a pizza that needs to cover 36 square inches. give two possible sets of dimensions (length and width) that will give letitia's pizza the desired area. also give the perimeter for each set.
Monday, March 30, 2015 at 9:22pm

5th grade math
Letitia is making a pizza that needs to cover 36 square inches. give two possible sets of dimensions (length and width) that will give Letitia's pizza the desired area. also give the perimeter for each set.
Monday, March 30, 2015 at 9:18pm

math
I am having problems with this problem.In the mythical kingdom of Permutatus, wizards have special 2-digit license plats, The first digit is greater than 6, and the second digit is odd. The two digits cannot be the same, How many different license plates are possible.
Monday, March 30, 2015 at 8:47pm

Math
Find the surface area of the a square pyramid.The A = 3 m and H = 4.5 m?
Monday, March 30, 2015 at 8:43pm

5th grade math
mrs. watterson wants to fence in an area for her dog. she has 72 feet of fencing and wants to use all of it to enclose a space with the greatest possible area. which dimensions will give her a space with the greatest possible area? (1 point) 16 feet by 20 feet 18 feet by 18 ...
Monday, March 30, 2015 at 8:40pm

7th grade math (probability)
I'm not sure how to answer this: 3. THe 7th grade wants to have a back-up representative just in case the first teacher is absent. Based on the same scenario as #2, if a math teacher was chosen to be the 7th grade representative, what is the probablility that the back-up ...
Monday, March 30, 2015 at 8:09pm

Math
What percentage of the total students chose skateboarding? Skateboarding boys=2 girls=1 A. 10% B. 20% C. 30% D. None of these Is the answer D? Thank took you
Monday, March 30, 2015 at 8:08pm

5th grade math
Meg is making ribbons for the country fair. she needs to glue edging around the outside of the circular part of the ribbon shown. about how many centimeters of edging does she need? 5 cm 7 cm 9 cm 28 cm
Monday, March 30, 2015 at 8:06pm

Math
How do I work this out? Corporate bonds issued by Johnson Corporation currently yield 11%. Municipal bonds of equal risk currently yield 6.5%. At what tax rate would an investor be indifferent between these two bonds? My answer is: 6.5%/1-11%=7.3 (7.3)(1- .11)=6.5 However, I ...
Monday, March 30, 2015 at 7:57pm

Math
The demand for a commodity generally decreases as the price is raised. Suppose that the demand for oil (per capita per year) is D(p)=800/p barrels, where p is the price per barrel in dollars. Find the demand when p=55. Estimate the decrease in demand if p rises to 56 and the ...
Monday, March 30, 2015 at 7:55pm

5th grade math
The circumference of a circular trampoline is 44 feet. Estimate the radius of the trampoline
Monday, March 30, 2015 at 7:53pm

Math
Not sure on a reasonable estimate for the weight of a pencil. Out of the choices given I have it narrowed down to 1x10^-2 lbs or 1 x 10^-20 lbs. I know it is not the other 2 choices because they are positive exponents and would be too heavy. Thanks.
Monday, March 30, 2015 at 7:39pm

math
What is the simplest form of the expression below? (4a+2b) + (6a+5b) F. 6a+11b G. 10a+7 H. 10a + 7b J. 17ab i think the answer is either h or j
Monday, March 30, 2015 at 7:09pm

Math
Tyler earns 7$ an hour mowing lawns. Write and solve an inequality that he can use to find at least how many hours he has to work to earn 100$
Monday, March 30, 2015 at 7:08pm

Math
5/6 + 1/12 I want to make sure that i'm doing it correct.
Monday, March 30, 2015 at 7:03pm

math
three more pancakes than his brother ate
Monday, March 30, 2015 at 6:43pm

Middle Math
My math calculator prompted me with this question 6E-7. My answer to this question is 0.00000007
Monday, March 30, 2015 at 6:39pm

math
how can you use a right angle to decide how to name another fraction
Monday, March 30, 2015 at 6:26pm

math
x: -2,-1, 0, 1, 2 ------------------- y: 9, 4,-1,-6,-11 find the function rule. please??
Monday, March 30, 2015 at 6:13pm

math
A gallon of unleaded gasoline weighs about 6 pounds. About how many ounces does ounces does 1 quart of unleaded gasoline weigh?
Monday, March 30, 2015 at 5:34pm

math help
how do solve for x 2.3^x=81-3^x
Monday, March 30, 2015 at 5:22pm

math
An office supply company is shipping a case of wooden pencils to a store. there are 64 boxes of pencils in the case. If each of pencils weighs 2.5 ounces, what is the weight, in pounds, of the case of wooden pencils?
Monday, March 30, 2015 at 5:21pm

Pre Algebra
My math question showed me a scientific notation on the calculator which represents (6E-7). My answer to this question is (-6,000,000) am I correct.
Monday, March 30, 2015 at 5:12pm

math
A male African elephant weighs 7 tons. If a male African lion at the local zoo weighs 1/40 of the weight of the male African elephant, how many pounds does the lion weigh?
Monday, March 30, 2015 at 5:10pm

Math
A retangular prism has a base that measures 9cm by 8cm and a height of 5cm. How many cubes will Joan use to fill the retangular prism?
Monday, March 30, 2015 at 5:07pm

math
A string of decorative lights is 28 feet long. The first light on the string is 16 inches from the plug. If the lights on the string are spaced 4 inches apart, how many lights are there on the string?
Monday, March 30, 2015 at 4:59pm

math
Is a rectangle a square?
Monday, March 30, 2015 at 4:51pm

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