# Homework Help: Math

## Branches of Math

## Recent Math Questions

**maTH**

which of the following correctly identifies angles that add up to 90 degrees and 80 dewgrees

*Tuesday, February 7, 2017 by URGENT HELP PLEASE*

**math**

trey drove 63 miles in minutes. if he drove at a constant rate, what is his speed in miles per hour

*Tuesday, February 7, 2017 by nalanii*

**Math**

Does the term "one real solution" and "one root" mean the same thing

*Tuesday, February 7, 2017 by Anonymous*

**Math**

A meteorologist predicted that the downtown area would get 16 inches of snow in a snowstorm. The downtown area ended up getting 13 inches of snow. What was the percent error of the prediction?

*Tuesday, February 7, 2017 by Math*

**math**

trey drove 63 miles in minutes. if he drove at a constant rate, what is his speed in miles per hour

*Tuesday, February 7, 2017 by nalanii*

**math**

if mark is 32 years younger than his father. the sum of their ages is 72. how old is mark?

*Tuesday, February 7, 2017 by deb*

**math**

.20x+x=? what is ?

*Tuesday, February 7, 2017 by sarah*

**Math**

7/8×16=

*Tuesday, February 7, 2017 by Anonymous*

**Math**

Katherine,claire and Lisa each have coins saved.Lisa has twice as many coins Lisa has.write a smplified expression representing the total number of coins that the three girls have

*Tuesday, February 7, 2017 by Anonymous*

**Math**

Graph the following polynomial. f(x)=(x+3)^2(x-2)^2(x+5) How would i graph ? f(x)=(x+5)

*Tuesday, February 7, 2017 by Aria*

**Math**

Identify the end behavior f(x)=(x-4)^2 As x ---> positive infinity, f(x) --> ____ infinity and as x --->, f(x) ---> ____ infinity Fill in blank

*Tuesday, February 7, 2017 by Pam*

**math**

Fred has 3 times as many dimes as quarters. How many dimes does he have if the value of all the coins is $3.85?

*Tuesday, February 7, 2017 by Kelley*

**Math**

A restaurant uses 80 pounds of potatoes per week. The restaurant owner buys the potatoes in 10-pound bags from a local farmer. How many bags will the owner need to buy this week?

*Tuesday, February 7, 2017 by Joe*

**math**

how do I find the possibilities here: x^2 blank 24 x^2 +2x blank It is confusing

*Tuesday, February 7, 2017 by kendall*

**math**

Help... 1. -1 3/4 writing as the quotient of two integers. 2. -0.73 writing as the quotient of two integers.

*Tuesday, February 7, 2017 by jay*

**Effective Learning Environment**

Which would be an important consideration for developing a preschool classroom? A. Unlike kindergarten children, children at this age don't participate in long-term projects, so they don't need storage for longterm work. B. You won't need a science or math center since ...

*Tuesday, February 7, 2017 by Anonymous*

**Math**

Fine the max or min points and the points of inflection for the function y=3x^4 - 10x^3 - 12x^2 + 12x - 7 Can someone help me!!!

*Tuesday, February 7, 2017 by Sara*

**math**

Suppose there are approximately 314 million people in the U.S. If the world population is 6.8 billion people, what percent of the world population is in the U.S.?

*Tuesday, February 7, 2017 by santana*

**Math Limits**

Let, f(x) = {4, x<5, -3x, x=5, 10+x, x>5} Evaluate each of the following: a) lim(x-->5-)f(x)= b) lim(x--)5+)f(x)= c) f(5)=

*Tuesday, February 7, 2017 by Anonymous*

**Math - Continuity of Functions**

Let f(x)=(x-2)/((sqrtx)-(sqrt2)), if x does NOT equal 2 and f(x)=k if x=2. Then f is continuous everywhere in its domain if k=

*Tuesday, February 7, 2017 by Anonymous*

**Math - Continuity of Functions**

For what value of the constant c is the function f continuous on (−∞,∞) where f(x)= c if x=0, and xsin(1/x) otherwise

*Tuesday, February 7, 2017 by anonymous*

**Math**

5x5

*Tuesday, February 7, 2017 by Anonymous*

**Math**

Five of the interior angle of a hexagon are equal if the size of the sisth angle is 155,what is the size of each of the five equal angle

*Tuesday, February 7, 2017 by Ewatomi*

**Math - limits**

Let f(t)=sint where t is the measure of the angle in degrees. Thus f is the sin function on your calculator if you select degree mode. Then: lim(t->0)(f(t)/t)= (Your answer will be a real number.)

*Tuesday, February 7, 2017 by Anon*

**math**

Find the equations of at least three lines that intersect each other at the point (6, -2).

*Tuesday, February 7, 2017 by maggie*

**Math**

Kelly has 15 blue bracelets and 12 green bracelets. What is the ratio of Kelly’s blue bracelets to green bracelets?

*Tuesday, February 7, 2017 by Don't need to know. Sorry*

**math**

In the card game “Match,” the loser has to double the money of the other players. Juan, Jamal and Joey are playing. First Juan loses and doubles the money of Jamal and Joey. Joey loses the next hand and doubles the money of Jamal and Juan. Jamal loses the next hand and ...

*Tuesday, February 7, 2017 by maggie*

**Math**

2. Write a ratio for the situation in three ways comparing the first quantity to the second quantity. In union City, about one in every three homes has two cars A. 5 to 2, 5:2, 5/2 B. 1 to 3, 1:3, 1/3 C. 5 to 3, 5:3, 5/5 D. 3 to 2, 3:2, 3/2

*Tuesday, February 7, 2017 by Bob*

**math**

Mrs. Smith was complaining about her teenagers drinking too much soda. Her three teens drank two cases of soda every five weeks. Mrs. Jones replied that her six teens go through five cases every four weeks. Who drinks more soda in a week on the average, one of Mrs. Smith...

*Tuesday, February 7, 2017 by maggie*

**math**

M is partly constant and partly varies with N, when N = 14, M = 150 and when N = 54, M = 192. Find the formula connecting M and N hence find M when N = 73 solutions m = k + cn 192 = k + 54c.................... (1) 150 = k + 14c.................... (2) subtract ( 1 ) from ( 2...

*Tuesday, February 7, 2017 by Austen Victoria*

**math**

solve the proportion 42/15 = ?/10

*Tuesday, February 7, 2017 by <kyky*

**math**

M is partly constant and partly varies with N, when N= 14, M = 150 and when N = 54, M = 192. Find the formula connecting M and N hence find M when N= 73 m=k+cn 192=k+54c............................. (1) 150=k+14c. ........................... (2) subtract (1) from (2) 142=40c ...

*Tuesday, February 7, 2017 by Austen Joy*

**Math 10C**

Janet needs a rectangular piece of cardboard measuring 21 ft by 24 ft for a school project. a) What is the area of the cardboard in square feet? b) What is the area of the cardboard in square yards? Show your calculations in two different ways. c) The store charges $0.35/m2 ...

*Tuesday, February 7, 2017 by Kevin*

**math**

If a basketball player missed 41 free throws out of 100, what fraction and what percentage of free throws did the player make?

*Tuesday, February 7, 2017 by Sylvia*

**math**

kitty is 4 years younger than mario three years from now she will be two thirds as older as mario .find their present ages

*Tuesday, February 7, 2017 by asiana*

**Math**

What must be added to 40 to make 10 by powers of 2 ?

*Tuesday, February 7, 2017 by Ale*

**Math**

The two triangle-shaped gardens are congruent. Find all of the missing side lengths and angle measures. Show any necessary work. (Triangle) • On the left, a triangle is shown with a lower horizontal side labeled 7.9 yards, a vertical right side labeled lower u, and a ...

*Tuesday, February 7, 2017 by Agala*

**Math**

Which ordered pair would be plotted by starting from the origin and moving 0.25 units left and then 3 units up? A) (3, -0.25) B) (0.25, -3) C) (-0.25,-3) D) (-0.25, 3)

*Tuesday, February 7, 2017 by Anon*

**Math**

A gymnasium is 50m long and 30m broad. A running track 2. 5m wide runs all around it on the inside. Find the area of the track?

*Tuesday, February 7, 2017 by Aayat*

**math**

The ratio of girls to boys in a school is 5:3. If there 60 boys, how many girls are in the school? I guessed it is 5+3=8.8/60

*Tuesday, February 7, 2017 by joy*

**math**

i have four digits i am more than 2500 i am less than 3000 my hundred digits id 6 my tens digit is one less than my hundreds digit my unit digit is 0 what number am i?

*Tuesday, February 7, 2017 by jess*

**math**

Hi can someone help me i am takeing a test i am in connexus adamaey i need help on my test

*Tuesday, February 7, 2017 by joe*

**math**

Two no which have same digit their sum is 9and difference is 27what will be the nos

*Tuesday, February 7, 2017 by maths*

**Math**

The sides of the rectangle are in the ratio of 4:7. If its length is 31.5 in., find the width, the perimeter, and the area of this rectangle.

*Tuesday, February 7, 2017 by Amy*

**Math**

How many positive integers, not having the digit 1, can be formed if the product of all its digits is 33750. With solution pls:)

*Tuesday, February 7, 2017 by K*

**business math**

A firm manufacture and markets a product that sells for Birr per unit .Fixed cost associated with activity total Birr 40,000 a month ,while variable cost per unit is Birr 10.A maximum of 10,000 units can be produced and sold

*Tuesday, February 7, 2017 by bitu*

**math**

a family has 3 children the eldest is 8 years older than the middle child and the youngest is 12 years younger than the eldest child of the total of their age is 88 how old is each child?

*Tuesday, February 7, 2017 by we*

**Math**

A tennis ball is hit into the air and can be modeled by h=16t*2++40t+3, where h is the height t is the time it takes the ball to travel. 1) At what time t does the ball reach its maximum height above the court? How high did the ball go? 2) How long did it take the ball to hit ...

*Tuesday, February 7, 2017 by Harold*

**Math**

(i) Evaluate integral [ x^3 / (x^2 + 4)^2 ] using trigonometric substitution. (ii) Evaluate integral [ x^3 / (x^2 + 4)^2 ] using regular substitution. (iii) Use a right triangle to check that indeed both answers you obtained in parts (i) and (ii) are the same. I would really ...

*Tuesday, February 7, 2017 by Jack*

**Math**

She needs to prepare 160 pounds of blended coffee beans selling for $3.69per pound. She plans to do this by blending together a high-quality bean costing $5.00 per pound and a cheaper bean at $2.00 per pound. To the nearest pound, find how much high-quality ...

*Tuesday, February 7, 2017 by Brandy*

**Math**

The result of reflecting across the line y = x and then rotating 330 degrees counterclockwise around the origin is an isometry T . Represent T by a 2 ⇥ 2 matrix. There is more than one way to do it. Use the point (1, 1) to check your answer. I know how to make the matrices ...

*Tuesday, February 7, 2017 by Amy*

**Math**

Edwin runs 1/8 around a track in 2 minutes.he runs for 4 minutes. Then he walk for another 3/8 mile.how far does Edwin go around the track?

*Monday, February 6, 2017 by johntrae*

**Math**

Mrs.Walters drove 360 miles on 25 miles of gas. Mr.Walter drove 480 miles on 32 gallons of gas. find the mileage per gallon of each car.which variable getting the better mileage per gallon. Mrs Walters 360 / 25 mpg = 14 2/5 mpg Mr Walters 480 / 32 mpg = 15 mpg Mr. Walters car ...

*Monday, February 6, 2017 by Help I need somebody not just anybody*

**Math**

1. There are 18 boys and 12 girls in a math class.what is the ratio of girls to total students? A.18:30 B.(12:30) C.30:12 D.30:18 2.which of the following ratios are equivalent to 6:9? Choose all that apply. A.3:2 B.18/27 C.(30:45) D.(24/32) 3.what is the unit price for one CD...

*Monday, February 6, 2017 by Help I need somebody not just anybody*

**Math**

Which equation(s) represents a proportional relationship? A) y=7x² B) y=2+3x C) y=1/2x D) y=5-x B, C, D Which equation(s) represents a proportional relationship? A) 5+x B) y=4x C) 7x² D) 2-x A, B, D

*Monday, February 6, 2017 by Hayden*

**Math**

Using the correct number of significant figures, calculate the perimeter and volume of a small, rectangular mirror that is 4.040 in long, 1.707 in wide, and 0.078 in thick. Make sure to calculate the the perimeter of the front of the mirror, and not the side. Dimensions are ...

*Monday, February 6, 2017 by Anonymous*

**Math**

If g(x)=x+3 h(x)=9-x^2, what is the maximum of h(g(x))?

*Monday, February 6, 2017 by Rachel*

**Math**

If cscØ = 4/3, find sinØ + sinØ cot^2 Ø

*Monday, February 6, 2017 by Brian*

**Math**

If tan(-a)=-5, find cot a

*Monday, February 6, 2017 by Elise*

**Math**

An open box is formed from a piece of cardboard 12 inches square by cutting equal squares out of the corners and turning up the sides. Find the volume of the largest box that can be made. Help!

*Monday, February 6, 2017 by Tracy*

**Math 2**

If your playing a game where you have 4 cards and you have to arrange them in to 2 digit numbers so they add up to a number near 100, and then you take the number you got and subtract it from 100, and then you play this game 7 times with 3 other people, and when you add up all...

*Monday, February 6, 2017 by Andy*

**Math**

Find the critical points, and the points of inflection y= (x+1)^2/x Help me please!!!

*Monday, February 6, 2017 by Sara*

**math**

touchdowns are six points per touchdown and an extra point can be awarded by making a field goal. Assuming that a team makes a field goal every time they score, write an equation to find "y" the total score for "x" amount of points.

*Monday, February 6, 2017 by Terra*

**Math**

The formula for the volume of a cube is V equals S3 where X represents the side length of the cube find the volume of a cube with side length of 0.5 millimeters

*Monday, February 6, 2017 by James*

**Math**

A car traveling at 25 mi/h accelerates to 48 mi/h over the first 5 seconds. It maintains that speed for the next 5 seconds, and then slows to a stop during the next 5 seconds. Connections answers please?

*Monday, February 6, 2017 by Anonymous*

**Math**

Translate this sentence into an equation. 56 is the sum of 13 and Vanessa's height Use the variable v to represent Vanessa's height.

*Monday, February 6, 2017 by Reedus*

**math**

You find a sales receipt from a store that shows the total price as $40, and the total amount paid including sales tax as $42. a. Write an equation you can use to find the sales tax rate which is r. what is the equation so I tried all things I could think of but it doesn't ...

*Monday, February 6, 2017 by leanna*

**Math**

The population of a city has been decreasing exponentially since 1990. In 1990, the population was 1,000,000. In 2010, the population was 560,000. If t represents time in years since 1990, which of the following equations best models the decay of the population? 1. y = 1,000,...

*Monday, February 6, 2017 by Rayhan*

**PLLZ!PLLZ help with math quick!!!!!**

6.Suppose you have a drawer full of white, black, and yellow pairs of socks. If the probability of picking a white pair of socks is 4/9, and the probability of picking a black pair of socks is 7/18, what is the probability of picking a yellow pair of socks? a. 1/6 b 5/25 c 7/...

*Monday, February 6, 2017 by plz plz help, i will fail 7th grade if i fail this*

**Math**

3' x 4.5' quilt, 24 equal squares, i need to know the side length of one square, i need to show the equation to show my work.

*Monday, February 6, 2017 by Ruben*

**math PROBABILITY part 2**

6.Suppose you have a drawer full of white, black, and yellow pairs of socks. If the probability of picking a white pair of socks is 4/9, and the probability of picking a black pair of socks is 7/18, what is the probability of picking a yellow pair of socks? a. 1/6 b 5/25 c 7/...

*Monday, February 6, 2017 by plz plz help, i will fail 7th grade if i fail this*

**Math**

Does the function represent exponential growth or exponential decay. Identify the growth or decay factor. y=9 x (1/2) I'm not sure how to make the chart to show the decay.

*Monday, February 6, 2017 by Sam*

**Math**

the speed of sound is approximately 1.2 x 10^3km/h how long does it take for sound to travel 7.2 x 10^2km. answer in minutes

*Monday, February 6, 2017 by Sam*

**math**

644 students packed a school's auditorium for a assembly. students sat in 12 rows. Rows were divided into 8 sections.

*Monday, February 6, 2017 by shakeela*

**math help quick please**

solve {y=x-7 {5x+2y=7 Use the substitution method. A.(0, −7) B.(7, 0) C.(3, −4) D.(−1, −8)

*Monday, February 6, 2017 by lily*

**Math**

alex is painting the side of his school. he paints a wall that has an area of 41 1/3 square yards. he uses 1 1/3 gallons of orange paint. what is alex's rate of paint coverage in square yards per gallon?

*Monday, February 6, 2017 by Person*

**math**

a photograph has an area of 80sq inches.the length of the photo is 1 1/4 width. what is the following dimension of the photgraph?

*Monday, February 6, 2017 by lara*

**Math**

If two fair dice are rolled, what is the probability that a total showing is either even or less than eight? Thanks for your help

*Monday, February 6, 2017 by MD*

**Math PROBABILITY part 1**

Anna mixes the letters S, E, L, E, C, T, E, and D thoroughly. Without looking, Mary draws one letter. Expressed as a fraction, decimal, and percentage, what is the probability that E will NOT be the letter Mary selects? A. 3/8, 0.375, 37.5% B. 8/5, 1.6, 16% C. 5/8, 0.625, 62.5...

*Monday, February 6, 2017 by plz plz help, i will fail 7th grade if i fail this*

**math**

Convert the scale to a unit rate. 3/8 in = 3/4 yd

*Monday, February 6, 2017 by Anonymous*

**math plzzz help quick**

What is the y-coordinate of the solution of the system of equations? {y=2x+14 {-4x-y=4 Enter your answer in the box. y =

*Monday, February 6, 2017 by lily*

**math**

three times a certain number is not greater than 54, find the range of values of the number

*Monday, February 6, 2017 by olam*

**math**

The radius of a circle is 17 feet. Using the formula A = r2, what is the area of the circle? Use 3.14 for pi.

*Monday, February 6, 2017 by Lily*

**math plzzz help quick**

What is the y-coordinate of the solution for the system of equations? {x-y=-11 {y+7=-2x Enter your answer in the box. y =

*Monday, February 6, 2017 by lily*

**Math**

How many lines of semmetry are found in the following figure The figure is a rectangle

*Monday, February 6, 2017 by Lovely*

**More math**

determine wich ration forms a proportion with 20/24 by writing the ratio in simplest form

*Monday, February 6, 2017 by J-kid*

**Please help (MATH)**

If two fair dice are rolled, what is the probability that a total showing is either even or less than eight? How would I solve this question? What are the steps? Thanks

*Monday, February 6, 2017 by Maddie*

**MATH**

The odds in favor of Carl beating his friend in a round of golf are 7 : 4. Find the probability that Carl will lose. would the answer be 7/11?

*Monday, February 6, 2017 by Maddie*

**Math Ms. Sue**

population density is the number of people per unit area what is the population density of a state that has 1329192 people in 35385 square miles round to the nearest hole number

*Monday, February 6, 2017 by J-kid*

**Math**

Decide if the following pair of functions are of the same order. The functions f(x) and g(x) are of the same order if f(x) is O(g(x)) and f(x) is Ω(g(x). (a) f(x) = x^2 - 7 and g(x) = x^2 + 7

*Monday, February 6, 2017 by Winston*

**Math**

The perimeter of an isosceles trapezium is 134 cm and the bases are 54 cm and 30 cm in length.find the length of nonparallel sides of the trapezium and its area.

*Monday, February 6, 2017 by Mensuration*

**Veterinary Medicine Math calculations**

I was so thankful to see this exact question answered in a different way but I still don't understand how I'm suppose to know how or what to do on the following question. I just seem to always forget something. Fifty milliliters of a solution of 50% dextrose is added to a ...

*Monday, February 6, 2017 by Selina*

**Math**

Suppose the P(A) = 1/6 . Find the odds in favor of A . Would you explain the step by step process? thanks!

*Monday, February 6, 2017 by Lily*

**Math**

write a ratio for both ecuations in three ways comparing the first quantity to the second quantity 1.a zoo has 17 monkeys and 12 chimpanzees 2.in greenvile about 1 in every 8 homes has three computers

*Monday, February 6, 2017 by J-kid*

**math**

6. There is an animal at the Toledo Zoo that needs to be transported to the Cincinnati Zoo. The distance between the two cities on the map is 12.2 cm. Using the scale on the map below, how many miles apart are the two cities? Make sure you label your answer. *

*Monday, February 6, 2017 by Anonymous*

**math**

5. The Wright Brothers are credited for the birth of aviation. There is a museum dedicated to them in Dayton. If you live in Mansfield, this museum is 8.1 cm away using the map. Using the scale on the map below, how many miles apart are the two cities Make sure you label your ...

*Monday, February 6, 2017 by Anonymous*

**math**

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

*Monday, February 6, 2017 by Anonymous*

**Math**

In a distribution, Q.D= 15 and co-efficient of Q.D=0.3 75% of the observation are less than? a)67 b)65 c)78 d)75

*Monday, February 6, 2017 by AnnA*

**Math**

If 6 out of 36 students were absent, what percent were present?

*Monday, February 6, 2017 by Teon*

**MAth**

A biologist wants to estimate the number of fish living in a lake. She caught 106 fish, tagged each one, and then released them back into the lake. After a few days, she caught 227 fish, and found that 11 of them were tagged. Use a proportion to estimate the number of fish ...

*Monday, February 6, 2017 by Santana*