# Homework Help: Math

## Branches of Math

## Recent Math Questions

**Math**

Allis drives 15 miles faster than diana. In the same time Diana travels 440 miles, Allie goes 560 miles. Find their speeds

*Thursday, February 2, 2017 by Hayley*

**Math**

find the area for the circle ( use 3.14 for pi ) show your work round to the nearest tenths . 23 yd

*Thursday, February 2, 2017 by Help i'm such a dumbo :(*

**Math**

chandra has 3 liters of a 28% solution of sodium hydroxide in a container. What is the amount and concentration of sodium peroxide solution she must add to this in order to end up with 7 liters of 48% solution?

*Thursday, February 2, 2017 by Ashley*

**math**

use the distance formula to find the distance between the points (-3,8) and (-4,-1) round to the nearest hundredth if neccesary

*Thursday, February 2, 2017 by help*

**math**

What is the value of x + y in the solution to the system of equations below? x + 8y = 2 y = -0.25x I just need the best explanation so i can do all my other problems cause im confused.

*Thursday, February 2, 2017 by edgard*

**check my work..math grade 8...surface area**

A men's basketball is about 24.3 centimeters in diameter, while the diameter of a women's basketball is about 23.4 centimeters. What is the ratio of the surface area of a men's basketball to the surface area of a women's basketball? Round your answer to the nearest hundredth. ...

*Thursday, February 2, 2017 by mark*

**Math**

A recipe calls for 2 2/4 cups of raisins but Julie only has 1/4 cup measuring cup.how many 1/4 cups does Julie need to measure out 2 2/4 cups of raisins?

*Thursday, February 2, 2017 by Tony*

**MATH**

Is 1/5 a Irrational number Rational neither

*Thursday, February 2, 2017 by Amy*

**Math**

Yoour goal is to save at least $240.00 over the next 4 weeks.How much must you save each week in order to meet that goal. Write and solve an inequality. a)4x>240;x>60 b)x>240;x>4 c)240x>60;x>60 d)4x<240;x<60******* ALL OF THE SIGNS WHERE EITHER GREATER ...

*Thursday, February 2, 2017 by Cow*

**math**

write 0.75 as a fraction

*Thursday, February 2, 2017 by Anonymous*

**Math**

12 girls and 20 boys signed up to play n a basketball tournament. Each team needs to have an equal number of girls and boys. What is the greatest number of teams possible

*Thursday, February 2, 2017 by Kallie*

**Math**

You use a line of best fit for a set of data to make a prediction about an unknown value. The correlation coefficient for your data set is 0.109. How confident can you be that your predicted value will be reasonably close to the actual value? • a) I can’t be confident at ...

*Thursday, February 2, 2017 by Apple*

**math**

5 teachers can mark 60 exams papers in 4 hours how long will it take 3 teachers to mark all 60 papers

*Thursday, February 2, 2017 by proportion*

**math**

Linda works 3 days per week at $6 per hour. If she works 4 hours per day how many weeks will it take Linda to earn $350?

*Thursday, February 2, 2017 by Jennifer*

**Statistics Math**

Let A and B be two exclusive events with P(A)=.2 and P(B) =.3. Find P(A|B)

*Thursday, February 2, 2017 by Nicole*

**Math**

Write the equation of a line that is perpendicular and that passes through the given point. y+2=1/3(x-5);(-4,3) I need help with this problem

*Thursday, February 2, 2017 by DayLA*

**Math**

Edit Write a differential equation to express (a) The rate at which the volume of a sphere changes with radius is proportional to the square of the radius. b) Gravitational attraction F between two given bodies of masses m1 and m2 decreases with the distance between them. The...

*Thursday, February 2, 2017 by Deya*

**Math**

I have 20 centimeters of yarn. I have 15 balls of yarn that each measure 3 meters long. How many bookmarks can I make?

*Thursday, February 2, 2017 by Pam*

**Math**

Robert wants to build a square sandbox that has an area of 25 feet

*Thursday, February 2, 2017 by Bella*

**Math**

The perimeter of a triangle is 43 feet.The small side is three was in the middle side, and the largest size to less than twice the middle side. What is the length of the longest side?

*Thursday, February 2, 2017 by Anonymous*

**Math**

what is 4+9 to the second power divided by 3x2-2

*Thursday, February 2, 2017 by Christina*

**Math**

Using only 7,6,5 and 3 once, how can I make the number 75? Using division, multiplication, adding and subtracting. With parenthesis!!

*Thursday, February 2, 2017 by Kaylee niece*

**Math**

Three scientists are observing Rickey and Riley, laboratory rats, to see how long each rat takes to find a piece of cake in a maze. The maze is a large box with open pathways running north-south and east-west in a grid pattern. Riley takes the direct route by traveling three ...

*Thursday, February 2, 2017 by Anonymous*

**math**

findmBACandmDAB in the figure shown below

*Thursday, February 2, 2017 by puppydog*

**Math m1**

A car of mass 1 tonne is towing a trailer of mass 400kg. They are connected by a rigid rod. Initially they are travelling at a constant speed. The car then accelerates. If the force in the rod is 600 N, find the acceleration of the car and the driving force of the engine.

*Thursday, February 2, 2017 by Stephan*

**Math**

Fill in missing values for a rectangular prism? Length is 8. Width is missing. Height is 14. Surface area is missing. Volume is 324.8

*Thursday, February 2, 2017 by Liza*

**Statistics (elementary probability theory)**

In an examination 60 candidates offer maths, 80 offer english,and 50 offer physics, if 20 offer maths & english, 15 offer english & physics, 25 offer math & physics and 10 offer all the 3. How many students entered to the examination ?

*Thursday, February 2, 2017 by Bulama dgn*

**MATH**

Scale 3 cm = 50 miles 1. Did you know Chillicothe was once the capital of Ohio? The distance from Chillicothe to the current capital, Columbus, is 48miles. Using the scale on the map how many centimeters apart are the two cities? Make sure you label your answer. 2. You are ...

*Thursday, February 2, 2017 by Shawn*

**math**

On Monday the temperature was 50 degrees the temperature increased by 22%. what was the temperature on Tuesday. 72 degrees 65 degrees 56 degrees 61 dgrees

*Thursday, February 2, 2017 by A!*

**Math/ slope**

write equation of line through the point ( -3,2) and slope of 1/4 in slope intercept form

*Thursday, February 2, 2017 by Nicki*

**Math**

5x - 4y =-3 Y = -3x + 5 Solve for x and y How do we solve for x and y when the formats of the equations are different. That's we here I'm lost. When I try to get the answer I get confused

*Thursday, February 2, 2017 by Jackie*

**Math**

Charles is going camping with hisis family. Their campsite is five eighths 5 8 mile away. They walk at a steady speed of 1 and one fourth1 1 4 mi divided by hmi/h. How many minutes will it take them to get to the campsite?

*Thursday, February 2, 2017 by Jack*

**Math**

A woman drove her car on a road running due north at a given rate for 6 hours. She continued her trip on an unsaved road due east for 5 hours at a rate of 4mph slower. Had she been able to go to her destination in a straight line from her starting point and at her original ...

*Thursday, February 2, 2017 by Joey*

**Math**

8x + 14y = 24 6x + 7y = 10 We are suppose to solve for x and y but I don't get the right answer

*Thursday, February 2, 2017 by Adam*

**Math - fractions**

Name 2 fractions between 1/2 and 5/7

*Thursday, February 2, 2017 by Gursimran*

**Math**

Mike and Jennifer are preparing for a race. On Friday, Mike ran for 3 2/5 hours and Jennifer ran for 4 3/4 hours. How much longer did Jennifer run (in minutes)? I know that 3 hours= 180 mins 4 hours = 240 mins But I'm not sure what the fractions would be, and when I tried to ...

*Thursday, February 2, 2017 by Micheal*

**Math**

If (a) varies directly as (b) and b= 20 when a= 4, find (b) when a=60 I don't understand this question at all

*Thursday, February 2, 2017 by Kendall*

**Math Help Pleaseee**

Find the surface area for the given prism a. 564in^2 b. 664in^2 c.1,120in^2 d.1,080in^2

*Thursday, February 2, 2017 by Mrs.Dummy*

**Math**

Frank has $20 less than Tracy. John has twice as much as Frank. Patty has three times as much as John. Together they have $340. How much does each person have? I tried multiple different numbers but they were either more or less then $340

*Thursday, February 2, 2017 by Natasha*

**Math**

How can I find the equation for x From (x/y) = (x+a-b)/z

*Thursday, February 2, 2017 by Afeef*

**Math--Matrix**

Q1. Suppose A= ( -1 2 -3 -4 3 2 1 3 1 ), then the determinant of this matrix is? Q2. Suppose det ( 1 2 3 1 4 5 y 4 5)=0, then y=?

*Thursday, February 2, 2017 by RA*

**Math--Matrix**

Suppose A = ( 6 9 -1 -4). Then the largest eigenvalue of A is? The smallest eigenvalue of A is?

*Thursday, February 2, 2017 by RA*

**Math--Matrix**

Suppose v= (1 x) is a 3-eigenvector of A= (5 -1 6 0), then x=?

*Thursday, February 2, 2017 by RA*

**Math (Algebra 2)**

What is the probability of choosing an H or a vowel? Honorable is the word. This is how I answered it Its mutually exclusive because of the key word "or" which is the Union. P(H)+P(Vowel)=1/9+4/9 Answer is 5/9 did I solve this right? Thanks

*Thursday, February 2, 2017 by Hannah*

**math**

10-2+3x5 no parethesis

*Thursday, February 2, 2017 by Donna*

**Math 1100**

A pipe 24ft long is cut into four pieces, the first 4ft long, the second 5ft long, and the third 7ft long. What is the length of the remaining piece ?

*Thursday, February 2, 2017 by Gabby*

**math**

1. Clay is on the basketball team at his high school. In one game, he had a total of 20 points, made up of 2-point and 3-point baskets. If he made a total of 9 baskets, how many of each type shot did he make?

*Thursday, February 2, 2017 by shatesia*

**Math**

Decide if the following pair of functions are of the same order. (a) f(x) = x^2 - 7 and g(x) = x^2 + 7 I found this example solution online: a). f(x) = 3x + 7 and g(x) = x x <= 3x + 7 <= 4x for all x > 7 I need help making sense of this so I can apply it to my work. ...

*Thursday, February 2, 2017 by Winston*

**math**

I buy 6 CDs for $6.99. How much change do I get from $50? Please does it mean one CD $6.99 or 6 CDs total $6.99? Cheers!

*Thursday, February 2, 2017 by Han*

**Math**

Question! If you put a bacteria in a beaker that doubles itself every minute at 11 and it's full at 12 at what time is it half full

*Thursday, February 2, 2017 by Sagar*

**math**

I bought 3 oranges for 29p and 2 drinks for 90p. How much did I spend altogether? Does it mean 29p for each organes or for all 3 oranges? cheers!

*Thursday, February 2, 2017 by Han*

**MATH**

RAQUEL IS NOW 3YRS OLDER THAN BEN.IN 5 YRS,THE SUM OF THEIR AGES WILL BE IS HOW OLD ARE THEY NOW?

*Thursday, February 2, 2017 by ADELANE MAHINLO*

**Math**

Emily drives 1000km in the first week of her journey. Every week Emily increases the distance by 50%. So, in the second week she drives 1500km, and in the third week she drives 2250km. How far will she have travelled altogether after 5 weeks? A. 5062.5km C. 9650.5km B. 8125....

*Thursday, February 2, 2017 by Anonymous*

**Math**

Leslie used more than a 1/2 cup but less than 1 whole cup of flour for recipe. what fraction of a cup Leslie used. Explain.

*Thursday, February 2, 2017 by Ashley*

**Math**

How many pieces 3/7 of a foot each can I make out of 7/2 feet of rope?

*Thursday, February 2, 2017 by Grace*

**math**

Solve: a toy store has 38 red spiders. It has 43 black spiders. Does it have more red spiders or black spiders? 38<43

*Thursday, February 2, 2017 by Anonymous*

**math**

n apples are to be packed into m boxes so that each box contains the same number of apples. How many apples will be packed into each box in terms of m and n?

*Thursday, February 2, 2017 by Anna*

**math**

Elijah made an array of Skittles with 3 rows and 4 columns. Josh made an array of peanuts with 4 rows and 2 columns. Jake made an array of M&M's with 2 rows and 5 columns. What is the total of the candy? -Is it 30?

*Wednesday, February 1, 2017 by ray*

**6 grade math**

I only need help on #2 I did number one if you can check it great if not only can help me on 2 Croakie is a very talented frog. He does tricks for the audiences at the Calaveras County Fair contest every year. Some of his tricks are quickly making him famous. He not only hops...

*Wednesday, February 1, 2017 by Jessica*

**math**

Ryan's team won 2 games and scored 27 points in the first game and 24 in the second game. They lost a game 40 to 18. What was the total number of points the team scored in the winning game?

*Wednesday, February 1, 2017 by rose*

**Math**

The average atomic weight of all elemons in the periodic tabe is 134.355 unidied atomic mass uints.

*Wednesday, February 1, 2017 by Josh*

**math**

1.solve for the given variable: x + 1/2 = 1 1/2 3/4 1*** 2 3 2. solve for the given variable: 10/13n = -30/39 -20/13 0 100/169 -1*** 3. solve for the given variable: k-3/4 = 10 43 5.5*** 37 52 PLEASE HELP ME WITH MY MATH!!!!

*Wednesday, February 1, 2017 by please help*

**math**

108 is 36% of what number? Write and solve a proportion to solve the problem. First write the proportion to find the missing value, which I will replace it with n. 108/n = 36/100 Next write the cross products. So, 36n = 108 x 100 = 10,800 divide each side by 36. 36n/36 = 10,...

*Wednesday, February 1, 2017 by tita*

**math**

Can i have the answers to the Algebra workbook 7th grade with the link to a pdf document with all the answers. Thank you

*Wednesday, February 1, 2017 by mugh hungus*

**math (Ms. Sue plz 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****

*Wednesday, February 1, 2017 by tita*

**Math**

Mrs Rossi wrote a mystery number it is 3 digit number the tens are double the ones the hundred are double the tens the sum of the digit is 14 What number is it. The answer is 491

*Wednesday, February 1, 2017 by Khylan*

**Math**

1/3 pan of brownies is left on the table sarah wants to share with 7 friends how much of the total pan will each girl get

*Wednesday, February 1, 2017 by Alishya johnson*

**math**

A 4-pound box of rice, which is a mixture of white rice and wild rice, sells for $1.80 per pound. White rice sells for $0.75 per pound. Wild rice sells for $2.25 per pound. How many pounds of white rice are in the mixture? -White rice = W Wild ride= S S+W=1.80 0.75w+2.25s=7.2 ...

*Wednesday, February 1, 2017 by Jared*

**Math**

Please show me how to write an equation in slope intercept form for a line with a y intercept of -1 and an x intercept of 4

*Wednesday, February 1, 2017 by Kelley*

**math**

Find all solutions to the given equation. tan(x/3)=0

*Wednesday, February 1, 2017 by Anonymous*

**Math**

System Of Elimination: Greg invested $11,000 in two accounts. The first account pays 5% interest per year. The second account pays 8% interest per year. Greg earned a total of $752.50 in interest at the end of the first year. How much did Greg invest in the 5% account? ~I don'...

*Wednesday, February 1, 2017 by edgard*

**Math**

Where would 5.33 be on a number line

*Wednesday, February 1, 2017 by Anonymous*

**Math**

Drew does push-ups every three days starting on 3 January. He does sit-ups every four days starting on January 4, On which days in January will he do both push-ups and sit-ups? Use words, numbers, or models to justify your answer

*Wednesday, February 1, 2017 by Gisela*

**math**

a turtle runs .5' a second. how far can he run in 1 hour?

*Wednesday, February 1, 2017 by deb*

**Math**

The directions For lemonade say to put 2 cups of the liquid concentrate into 1 gallon of water if Olivia only wants to make 1 pint of lemonade how many fluid ounces of concentrate would she use explain

*Wednesday, February 1, 2017 by Anonymous*

**Math**

Julian wants to put a border around two sides of a rectangular shaped Garden he has a 12 foot piece of lumber that will be cut into 1/3 foot pieces how many 1/3 foot pieces can julienne cut from the lumber??

*Wednesday, February 1, 2017 by Luther*

**Math**

There are five Voting Districts in the City; District A with 877 constituents, District B with 1062 constituents, District C with 1364 constituents, District D with 1518 constituents, and District E with 1933 constituents. There are 14 available on the local School Board. Use ...

*Wednesday, February 1, 2017 by Asia*

**math**

A baseball diamond is a square with each side 90 feet long. What is the straight-line distance from third base to first base? (Round your answer to the nearest tenth.)

*Wednesday, February 1, 2017 by victor*

**input output math**

i need help with the input 4 and output 25, input 5 and output 32

*Wednesday, February 1, 2017 by megan*

**Math**

Jim has 87 lightbulbs to put into packages of 4 bulbs each. Before he packed the bulbs 10 lightbulbs broke How many complete 4 packs of lightbulbs could he make with the remaining bulbs?

*Wednesday, February 1, 2017 by Gisela*

**Math**

Mrs. Sue, I have a math question if you can please help me on this. I am confused. I am doing coordinates. If I have a theater at 5 and a Restaurant at -4 (5,-4) how do I find out the halfway point in between?

*Wednesday, February 1, 2017 by Donald*

**math**

Martina and Charlotte are sharing a pizza.The pizza is cut into eight pieces. Martina ate a quarter of a pizza . Charlotte ate 3 pieces. How many are left?

*Wednesday, February 1, 2017 by Martina, and Charlotte*

**Math**

Dale grew 63 tomatoes. She sold them at a roadside stand. She put 5 tomatoes in each carton and sold each full carton for $3. How much money will she make for all of the full cartons?

*Wednesday, February 1, 2017 by Marina*

**Math**

Dr ew does push ups every three days starting on January 3. He does sit-ups every four days starting on january 4, On which days in January will he do both push-ups and sit-ups? Use words numbers, or models to justify your answer.

*Wednesday, February 1, 2017 by Christian*

**Math**

Derek ran 3/8 of a race before he had to stop for a break .if the race is 6 miles long,did Derek run more than,less than ,or equal to 6 miles before he took a break?

*Wednesday, February 1, 2017 by Cody*

**Math**

a swimming pool is 40m long 25m wide 6m deep find a cost of cementing of its floor and walls at the rates of ₹135 square per meter

*Wednesday, February 1, 2017 by Rahul*

**Math**

A section of stained glass is made by placing a circle at the top of a triangle with a base of 10 centimeters and a height of 8 centimeters. The diameter of the circle is equal to the height of the triangle. What is the area of the section of stained glass? Show your work. Use...

*Wednesday, February 1, 2017 by Alex*

**Math**

Three scientists are observing Rickey and Riley, laboratory rats, to see how long each rat takes to find a piece of cake in a maze. The maze is a large box with open pathways running north-south and east-west in a grid pattern. Riley takes the direct route by traveling three ...

*Wednesday, February 1, 2017 by Anonymous*

**math**

a post 47 m high is supported by two equal wires attached to its top and to two points on a level ground, each of it is 18 m from the food of the post. Find the length of each wire

*Wednesday, February 1, 2017 by Anonymous*

**Math**

What two numbers the exact answer is between 3x567 6x7,381 4x94 8x684

*Wednesday, February 1, 2017 by Hannah*

**math**

The north wall of a barn is a rectangle 25 feet high and 60 feet long. There are five windows in the wall, each 8 by 10 feet. If a gallon of paint will cover 275 ft2, how many gallons of paint must the painter buy to paint the wall?

*Wednesday, February 1, 2017 by victor*

**Math**

How do you find two numbers the exact answer is between

*Wednesday, February 1, 2017 by Hannah*

**Math**

What is an example of a real world relationship where there is no clear independent or dependent variable

*Wednesday, February 1, 2017 by Pam*

**Math Cal 1**

Find numbers a and b or k so that f is continuous at every point. \ F(x)= 4x+7 if x<-4 kx+10 if x≥-4 Is -5/2 the correct answer?

*Wednesday, February 1, 2017 by Christopher*

**4th grade math**

Can you check please. 1. Melvin had 20 children in his kindergarten class. Two-fifths of the children had brown eyes. Onefourth of the children had blue eyes. The rest had hazel eyes. How many children had hazel eyes? 20(2/5) = 8 brown 20(1/4) = 5 blue 8+5=13. So 21-13 = 7 hazel

*Wednesday, February 1, 2017 by Jared*

**math**

the product of helena's age and 4 is 76

*Wednesday, February 1, 2017 by brandon*

**M1-math**

A bullet of mass 20 grams is fired into a wall with velocity of 400 ms 1. If the bullet penetrates the wall to a depth of 1cm, find the resistive force of the wall.

*Wednesday, February 1, 2017 by Stephan*

**math**

One half a number minus 6 is 4 . What is the number?

*Wednesday, February 1, 2017 by math*

**math**

a car travels 120m along a straight road that is inclined at 8°to the horizontal. calculate the vertical distance through which the car rises

*Wednesday, February 1, 2017 by rokeeb*

**Math**

Decide if the following pair of functions are of the same order. (a) f(x) = x^2 - 7 and g(x) = x^2 + 7 I found this example solution online: a). f(x) = 3x + 7 and g(x) = x x <= 3x + 7 <= 4x for all x > 7 I need help making sense of this so I can apply it to my work. ...

*Wednesday, February 1, 2017 by Winston*