Thursday
February 23, 2017

Homework Help: Math

Branches of Math

Recent Math Questions

math
Amy & Ashley bike along the same trail. Amy bikes the entire trail at 20mph & Ashley bikes at 15mph. Amy finishes 8 minutes before Ashley. How many miles long is the trail?
Tuesday, December 13, 2016 by dave

Math
Simplify cos(x+y)-cos(x-y)
Tuesday, December 13, 2016 by Jenny

Math
Orin has driven 150 miles in the past 8 hours write an algebraic expression to show how many miles are in drove each hour
Tuesday, December 13, 2016 by Anonymous

Math correct me
5.The sales tax rate 6.3%. a. find the tax paid for a pair of earrings with a list price of $77 b. what is the total cost of the pair of earrings? $4.85;$77.79 $4.85;$81.85 ••• $0.49;$77.49 $0.49;$81.85
Tuesday, December 13, 2016 by Lily

Math
Jessica earned a total of $647 in simple interest from two seperate accounts. In an account earning 9% interest, Jessica invested $2,300 more than twice the amount she invested in an account earning 2%. How much did she invest in each account?
Tuesday, December 13, 2016 by Clayton

math
Use cross products to see if each​pair of ratios forms a proportion.​ Replace each box with = or ≠.
Tuesday, December 13, 2016 by annnoynmususususu

Math Tax Rates/Percents
Calculate the tax for each given rate. Select the rates with tax greater than $3. $45: Tax- 7% $80: Tax- 2.9% $66: Tax- 10% $29: Tax- 11% $55: Tax- 4.5% My answers: The first one The third one The fourth one Am I correct??
Tuesday, December 13, 2016 by Violet Exowon

math
what is the best estimate for the sum of 5/12 + 2/5
Tuesday, December 13, 2016 by Payton

Math Interest rates/percents
Calculate the simple interest for each situation. Which choices have a simple interest grater than $800. Select all that apply: $2,000 at 6% for 7 years $4,500 at 3% for 6 years $1,400 at 6% for 9 years $5,000 at 7% for 3 years $800 at 15% for 5 years I really need help. I am ...
Tuesday, December 13, 2016 by Ok I Am Yasmine

Math Percents: Please help!!
A bike was originally 240 but the price was marked up 15%W What is the new price of the bike? a) $250 b) $264 c) $268 d) $276 I think it is b. Am I right?
Tuesday, December 13, 2016 by Daisy and Lincoln for life!!!

Math Help
Given the functions of f(x)=(x-3)/(x9), g(x)=9x+3, find (gof)(x).
Tuesday, December 13, 2016 by Laura

math
Debra has 3600 of ribbon, how many pieces at 8 inches each will she get out of 3600
Tuesday, December 13, 2016 by Shelia

math
divide the 300Rs between hina and rina such that rina gets 100 less than 3 times what hina gets?
Tuesday, December 13, 2016 by hassan

Anyone good with probability??
Mark, Carrie, Max, and Jane are doing a probability experiment in math class. They flip a coin 200 times and record their results. Heads:120 Tails:80 Question 2 on their lab sheet asks for the theoretical probability of flipping heads. They come up with four different answers...
Tuesday, December 13, 2016 by Ann

Science-y Math-y Stuff
A machine with 80% efficiency does 4,000 J of work. Using the machine how much work did you do? NEED HELP! PLZ REPLY SOON
Tuesday, December 13, 2016 by NYB

math
prove the identity cos x/sec x-tan x=1plus sin x
Tuesday, December 13, 2016 by laston

Math
Construct a triangle ABC such that BC = 5.2cm,AB=4.8cm and median CM=3.6cm.
Tuesday, December 13, 2016 by Satyam

Math
A family has 3 children. Their first child was a girl. What I'd the probability that the two children are of different gender?
Tuesday, December 13, 2016 by Ana

math Venn diagram
In a small school of 100 students 70 like red, 50 like blue and 10 like yellow. If told that the 10 students who selected yellow do not like red or blue. How many students like red and blue?
Tuesday, December 13, 2016 by Stacy

Math grade 6, two-part problem
Amy,nicholas,cindy and calvin shared $60 amy received 1/2 of the total amount of money received by nicholas,cindy and calvin.nicholas received 2/3 of the total amount of money received by cindy and calvin.cindy received 3 times as much as calvin. A. How much money did amy ...
Tuesday, December 13, 2016 by Peachie

Math
1. A box of crackers has a mass of p kilograms. When empty, the box has a mass of 200 grams. What is the total mass of the crackers in 5 such boxes? Express your answer in kilograms. (seems to me like the empty box part of this is there just to throw you off. Isn't the answer ...
Tuesday, December 13, 2016 by Anonymous

Math
I tried answering this and pending how I read it I get several answers. Any help out there 1. A box of crackers has a mass of p kilograms. When empty, the box has a mass of 200 grams. What is the total mass of the crackers in 5 such boxes? Express your answer in kilograms.
Tuesday, December 13, 2016 by Travis

math
A rectangular box is of length 2/5 m. It has a square base of area 9cm*cm. What is the greatest number of 2 cm cubes that can be cut from it?
Tuesday, December 13, 2016 by muskan

Math fractions
How do you get from 4 22/15 to be 5 7/15. If some one can explain I keep breaking my head Thank you
Tuesday, December 13, 2016 by Jessica

Math
A length of metal pipe has a circumference of 2.5 inches. the pipe is 1/16 inches thick. a gas fitter needs to know the inside diameter of the pipe to calculate the gas pressure. What is the total diameter of pipe including metal? how much of the diameter is metal? what is the...
Tuesday, December 13, 2016 by Hana

math
what is the difference in weight (in pounds) 100 gallons of water is 8.34 pounds per gallon and 100 gallons of gasoline at 0.71 kilograms per liter?
Tuesday, December 13, 2016 by pooh

math
A restaurant offers seven different main courses,,eight types of drinks and four kind of desserts. How many different meal consisting of main course,a drink and a dessert does the restaurant offer?
Monday, December 12, 2016 by jen

Math
Write the expression in standard form by collecting like terms: 12×-3(×-5y)+1÷2(4×-10y)
Monday, December 12, 2016 by Norazizah

Math
-3(×-5y)+1÷2 (4×-10y)
Monday, December 12, 2016 by Norazizah

Math
The ratio of adults to children at a park is 2:5.If there are 10 adults at the park, how many children are there?
Monday, December 12, 2016 by Norazizah

Math lovely Math
A boy had a box of animal crackers. He counted them out and found 20 cookies. 7 elephant cookies 6 tiger cookies 5 monkey cookies 2 zebra cookies Suppose the boy put all the cookies back into the box and took 1 out without looking. What is the probability of him choosing.. An ...
Monday, December 12, 2016 by KD35

Math
what is the measure of the angle of an arc that is 25 cm long with a radius of 7?
Monday, December 12, 2016 by Kate

Math
Sally charges $175 for 5 hours of babysitting. How can I put that into an equation. What is the slope of the line, what is the y-intercept, is it proportional, and is it a function???????
Monday, December 12, 2016 by ROSE

Math
I tried answering this and pending how I read it I get several answers. Any help out there 1. A box of crackers has a mass of p kilograms. When empty, the box has a mass of 200 grams. What is the total mass of the crackers in 5 such boxes? Express your answer in kilograms.
Monday, December 12, 2016 by Travis

Math
Susan picked a squash that weighed 8/15 lb. Larry picked a squash that weighed 1/4 as much as susan's squash. How much did larry'squash weigh?
Monday, December 12, 2016 by Anonymous

math
how do i put 32 ninths as a fraction on a numberline
Monday, December 12, 2016 by emily

Math Help
Pretend you have 2 triangles that are similar. Triangle 1 has sides that are 18 and 24. Triangle 2 has sides that are x and 6. What is the value of x? -6 -8 -30 -72 <--- I chose this answer.
Monday, December 12, 2016 by Harriet

math
x^1/2-6=x^1/4 please explain steps to solving!
Monday, December 12, 2016 by Kyle

Math
I gave 2/3 of my fish to John then 2/5 to Mary how many fish did I start with
Monday, December 12, 2016 by Connie

Math
To begin a bacteria study, a petri dish had 1500 bacteria cells. Each hour since, the number of cells has increased by 7.1%. Let t be the number of hours since the start of the study. Let y be the number of bacteria cells. Write an exponential function showing the relationship...
Monday, December 12, 2016 by Monae

Math
A science class has 3 girls and 7 boys in the seventh grade and 5 girls and 5 boysin the eighth grade. The teacher randomly selects a seventh grader and an eighth grader from the class for a competition. What is the probability that the students she selects are both girls?
Monday, December 12, 2016 by Tay

Math
Mr. Jones makes 3% commission on his sales of widgets. At a different company, Mr. Smith makes 5% commission selling the same widgets at the same price. Mr. Smith sold 500 fewer widgets than Mr. Jones, and they both earned the same commission. How many widgets did Mr. Smith sell?
Monday, December 12, 2016 by Please help!!!

Math
A science class has 3 girls and 7 boys in the seventh grade and 5 girls and 5 boysin the eighth grade. The teacher randomly selects a seventh grader and an eighth grader from the class for a competition. What is the probability that the students she selects are both girls?
Monday, December 12, 2016 by Gia

Math
Mandi had 3/4 pound of chocolate. She ate 2/3 of her chocolate. How much did she have left? Use diagram to solve.
Monday, December 12, 2016 by Toni

Math
Rewrite the set G by listing its elements. Make sure to use appropriate set notation. G= { x | x is an integer and -5< x <_ -2 }
Monday, December 12, 2016 by Gia

Stats -Math
1. We are interested in conducting a study in order to determine what percentage of voters of a state would vote for the incumbent governor. What is the minimum size sample needed to estimate the population proportion with a margin of error of 0.05 or less at 95% confidence? ...
Monday, December 12, 2016 by Lauren

HELP MATH
What happened? The question was whiped out, Thank you steve for the answer through.
Monday, December 12, 2016 by wtf x

Math
Translate this sentence into an equation. The product of Vidya's score and 2 is 22
Monday, December 12, 2016 by Gia

math
there are 3 boxes of tangerines each box has 93 tangerines the tangerines will be divided equally among 9 classrooms how many tangerines will each class get.
Monday, December 12, 2016 by damia

math
is it possible for system of two linear equations to have no solution.
Monday, December 12, 2016 by Anonymous

Math
Mr. Jones makes 3% commission on his sales of widgets. At a different company, Mr. Smith makes 5% commission selling the same widgets at the same price. Mr. Smith sold 500 fewer widgets than Mr. Jones, and they both earned the same commission.How many widgets did Mr. Smith sell?
Monday, December 12, 2016 by Sabrina

Math
Representing each sum as a single rational number. a.-14 + (-8/9). -14 8/9? b. 7 + 1/9 = 7 1/9? c. -3 + (1/6) = -3 1/6? Do i just add the fraction and number together? and, the last problem is: a student is completing a math problem and is at the last step: 25 - 28 1/5. How do...
Monday, December 12, 2016 by need math hw help

math
you need to fill a bag with 14 kg of oranges. how can you measure 14 kg of oranges using a balance scale and these weights :1kg,5kg and 10 kg
Monday, December 12, 2016 by tasniah

math
suppose that you are a power company who must provide power to a lighthouse on an island 1 mile off shore. the nearest pole to run the line from is 2 miles up the shore from the line straight out to the lighthouse. if the line costs $1000/mile on land and $1500/mile on water, ...
Monday, December 12, 2016 by Millie

math
The well is dug 14m deep. Its radius is 2m. The earth dug out is evenly spread out on a rectangular field of dimensions 10m*4m. Find the height of the platform raised.
Monday, December 12, 2016 by aditi

Math
The ratio of students to teacher at school is 19:1 how many students are there in each total number of people?
Monday, December 12, 2016 by Jaylin

Math- enqualities
Jay is creating a playlist and needs at most 180 minutes worth of music. He currently has 45 minutes. How many more minutes of music does Jay need to include in the playlist?
Monday, December 12, 2016 by Leah

math
Part A: Max rented a motorbike at $465 for 5 days. If he rents the same motorbike for a week, he has to pay a total rent of $625. Write an equation in the standard form to represent the total rent (y) that Max has to pay for renting the motorbike for x days. (4 points) Part B...
Monday, December 12, 2016 by katrina

Math
Cylinder A has radius r and height h. Cylinder B has radius 2r and height 2h. How many times greater is the surface area of Cylinder B than the surface area of Cylinder A? I have no idea how to start doing this problem. Are there any tips on how to start?
Monday, December 12, 2016 by Rylie

Math
The statements p → q and q → r are given. If we know q is true, is p necessarily true? Explain.
Monday, December 12, 2016 by Melissa

Math
The students in a class of 24 share 48 apple slices and 36 orange slices equally among them. How many pieces of fruit did each student get?
Monday, December 12, 2016 by Vanessa

math
((2)/(x-2))^(2)-3((2)/(x-2))+2=0 please explain the steps!
Monday, December 12, 2016 by Kyle

math
Which of the following best completes the sequence below? 5, 10, 15, 20...
Monday, December 12, 2016 by lecia

math
beth painted her room by mixing 15 pints of yellow paint with tree pints of green paint. If she used the same ration of yellow to green paint, how much yellow paint would she need if she used 7 pints of green
Monday, December 12, 2016 by T

math
Give an example that shows how to use the Distributive Property to multiply a number by a sum. All of the numbers you use should be mixed numbers or fractions.
Monday, December 12, 2016 by brittany

Math
The statements p → q and q → r are given. If we know q is true, is p necessarily true? Explain.?
Monday, December 12, 2016 by Melissa

math
Evaluate 13 35 × 5 9
Monday, December 12, 2016 by kim

Math (please check my answer)
Write a proof for the following. I have 2 answers but I don't know what the other 2 would be? Can anyone help?i68.tinypic(.)com/k2nw9.jpg
Monday, December 12, 2016 by Ren

quick question regarding math
If I solve an equation and it comes out to all real numbers, is going to be always true, sometimes true, or never true? I do not know why I am having trouble with this but really need help.
Monday, December 12, 2016 by Olivia N J

math! Quantitative methods!
Discuss 5 application areas of assignment methods of Linear programming.
Monday, December 12, 2016 by jon

math
a boy spends 3/8 of his money on food and 2/5 of the remainder on books, and had $15.how much did he have
Monday, December 12, 2016 by kelvin

math
Discuss 5 application areas of assignment methods of Linear programming.
Monday, December 12, 2016 by Farahan

Math
In the diagram. AC = 11cm, BC = 5.5cm and B^AC = 25°.It is given that A^BC is an obtuse angle. Calculate A^BC.
Monday, December 12, 2016 by Areeb

Math.
Solve the linear equation. 14x−1/2(4x+6)=3(x−4)−18
Monday, December 12, 2016 by April Martinez.

math
How do you read the numeral 2 followed by 8 zeros?
Monday, December 12, 2016 by renel jay

Math
If the ratio of the areas of two squares is 8:25 and the side of the smaller square measures 28 cm, find the area of the bigger square?
Monday, December 12, 2016 by Jersey

math
If side of triangle are in the ratio 3:4:5 and its perimeter is 24 cm, find measure of each side of triangle. How to solve this Questions please show.
Monday, December 12, 2016 by Kamla Devi Public School

8TH GRADE MATH
A SOFTBALL DIAMOND IS A SQUARE WITH SIDES OF 60 FT LONG. HOW FAR IS THIRD TO FIRST BASE. ROUND TO THE NEAREST HUNDRETH. SO FROM THIRD TO FIRST IT WILL FORM A RIGHT TRIANGLE. THE LEGS ARE 60 TO 2ND POWER + 60 TO THE 2ND POWER. THE HYPOTENUSE IS WHAT I DON'T KNOW TO FIGURE OUT.
Monday, December 12, 2016 by DRE

Math
Here is the question:Consider a data set of 15 distinct measurements with mean A and median B. (a) If the highest number were increased, what would be the effect on the median and mean? Explain. The mean would remain the same while the median would increase. Both the mean and ...
Sunday, December 11, 2016 by Tina

math
Travis is 2121 years older than his sister Michelle. In 99 years, he will be twice as old as Michelle. How old is each of them now?
Sunday, December 11, 2016 by kendra

MAth
at a city hospital 40 boys and 50 girls were born yesterday. what is the experimental probability that the next baby born will be a girl?
Sunday, December 11, 2016 by Kelli

math
A snowball was thrown from a cliff. The height above ground of the snowball is modeled by the function h(t) = -16t2 + 48t + 28, where h is height in feet, and t is time in seconds. How long was the snowball in the air? Did everything got (4t+7)(t+1) then did 4t+7=0 i got t=-1....
Sunday, December 11, 2016 by Jalen

Math
Can a hexagon have angles that measure 85 62 133 95173 160
Sunday, December 11, 2016 by Mistie

math
A snowball was thrown from a cliff. The height above ground of the snowball is modeled by the function h(t) = -16t2 + 48t + 28, where h is height in feet, and t is time in seconds. How long was the snowball in the air? Did everything got (4t+7)(t+1) then did 4t+7=0 i got t=-1...
Sunday, December 11, 2016 by Jalen

Math
If it is 750 calories per hour how many hours would a person have to jump rope in order to lose 1 lb ?
Sunday, December 11, 2016 by Rita

math
if Mindy has a 20 minute walk to school and she stops for a hotdog that takes 5 minutes to cook how long will it take for her to get to school?
Sunday, December 11, 2016 by Anonymous

Math
Write and solve an equation to find how much water Montana average 3 month temperature is then minnesota
Sunday, December 11, 2016 by Stella

math
A video store charges $3.50 to rent a DVD. Every fourth DVD that a customer rents is free. Brooke paid a total of $252 last year for renting DVDs. How many free DVDs did she receive?
Sunday, December 11, 2016 by britt

Math
a scarf is originally priced at $30.00. it is then discounted by 25%. several days later, it is discounted 10% off the new price. is the cost of the scarf the same as if the store had taken 35% off the original $30?
Sunday, December 11, 2016 by Paris

math
Paul works for three hours. Sally works 2 1/2 times as long as Paul. Raul works 3/4 hours less than Paul. Tim works 1 1/3 times as long and Raoul. How long does each person work? How long do they work together?
Sunday, December 11, 2016 by Kristin

math
Discuss 5 application areas of assignment Methods of Linear programming.
Sunday, December 11, 2016 by Ras

Math
If Mrs. Jacobsen wants to buy the item with the unit price , what item should she order and how many of that item should she order?
Sunday, December 11, 2016 by Jo

math(Quantitative methods) pls help me out
Discuss 5 application areas of assignment Methods of Linear programming.
Sunday, December 11, 2016 by farahan

Math! Help!
Domain of X^2-1 ??
Sunday, December 11, 2016 by Christine (Help!)

Math! Help!
Please i need the euclidean division of: 2X^3+3X^2-X-5 ÷ X^2-1 Help!
Sunday, December 11, 2016 by Christine (Help!)

Math
If there are 860 apples 20% is red and 15% is yellow what percent is green
Sunday, December 11, 2016 by Emma

Math
Someone please help me, I do not understand how to solve this problem: Let x be a random variable representing dividend yield of bank stocks. We may assume that x has a normal distribution with σ = 2.0%. A random sample of 10 bank stocks gave the following yields (in percents...
Sunday, December 11, 2016 by Riana

math
The shape of a milk carton is a solid composed of a rectangular prism and a pyramid as shown. What is the formula for finding the volume of the milk carton?
Sunday, December 11, 2016 by john

math
Clay Thompson scored 38 points in one game. He made both 2pt shots and 3 pt. Shots. He scored a total of 16 times. How many 2 pt shots did he make and how many 3 pt shots did he make?
Sunday, December 11, 2016 by Anonymous

math check my answer please
What is the smallest perfect cube that has a factor of 4725? Factors of 4725 are 3,3,3,5,5,7 I have 3^3 and 5^2 and 7. So I need 1 more 5 and 2 more of 7 So: 3^3*5^3*7^3 = 1157625 When I cube root 1157625 it is 105. So is this the answer? The smallest perfect cube that has a ...
Sunday, December 11, 2016 by samantha

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