# Homework Help: Math

## Branches of Math

## Recent Math Questions

**Math**

-3 + n/2 = 9

*Thursday, February 23, 2017 by Kayla*

**Math**

How would I start both of these questions not sure. If h(x)=1/(x+3)^3 then determine a. f(x) and g(x) such that h(x)=(f of g)(x). b. r(x) and s(x)different from f(x) and g(x)such that h(x)=(r of s)(x)

*Thursday, February 23, 2017 by Mekhia*

**Math**

A die is thrown 240 times. What is the probability of getting fifty 2s. plss I have been stuck on this

*Thursday, February 23, 2017 by Favour*

**business math**

You want to buy furniture which will cost N$ 20,000. You could take out a personal loan for N$20,000, which would charge you 9% p.a. interest compounded monthly. You also have N$20,000 in an investment account, where you earn interest of 12% p.a. compounded annually. Taking ...

*Thursday, February 23, 2017 by wilhel,*

**math**

Find the area of the segment cut off by a chord of length 10cm from a circle radius 13 cm.

*Thursday, February 23, 2017 by tiara*

**Math**

There were 3 similar metal balls in the tank.if the 3 metal balls were out,the water in the tank would drop from 15 cm to 6 cm.find the volume of each metal ball.

*Thursday, February 23, 2017 by Peachie*

**math**

what is the sum of all proper fractions with denominators less than ten? help me plssss

*Thursday, February 23, 2017 by luisa*

**Math - Derivatives**

Find the nth derivative of y=2x/(1-x^2) (Hint: Consider -[(1/(x-1))+(1/(x+1))].)

*Thursday, February 23, 2017 by Anonymous*

**math**

f(x)=ax^3+bx^2+cx+d and f(0)=-18 determine the equation of f

*Thursday, February 23, 2017 by john*

**math**

-8x 20 is a tangent to f(x) x^3 x^2 bx 18 at x=1 calculate the values of a and b I tried the question but I failed

*Thursday, February 23, 2017 by Emily*

**math**

Dallas was given a discount of 10 percent of the following items: 1/1/4 cartons of exercise books @ sh 42000 per cartons,ten cartons of pens sh 22000 each.How much did he pay all together after the discount of 10 percent? *I need anyone to help me please* And in case someone ...

*Thursday, February 23, 2017 by kelvin*

**math**

the sum of two numbers is 20.one number is 3 time the other number . find the two numbers?

*Thursday, February 23, 2017 by Jo*

**math**

there were 825 pupils in a school. 52 percent were boys. more boys joined the school and the percentage of boys became 64 percent of the new total. how many boys joined the school?

*Thursday, February 23, 2017 by peter*

**Math**

Can someone explain how to solve this equation using each step? I'm confused. (2^8⋅5^−5⋅19^0)^−2⋅(5^-2/ 2^3)^4⋅2^28

*Wednesday, February 22, 2017 by CCB*

**math**

if secA=12/5 what is the value of A

*Wednesday, February 22, 2017 by Shamim Hossain*

**Math**

Graph y = -2X an y = -Xsquared what points do the graphs have in common? How are they different?

*Wednesday, February 22, 2017 by Kaity Bear*

**Math/Calculus**

Find the equation of the tangent line to the given equation at the indicated point a) y^2=cos(5x-3y) at ((2pi+3)/5, 1) b) x^2+x^2y+4=0 at (2,-2)

*Wednesday, February 22, 2017 by Anonymous*

**math**

Dallas was given a discount of 10 percent of the following items: 1/1/4 cartons of exercise books @ sh 42000 per cartons,ten cartons of pens sh 22000 each.How much did he pay all together after the discount of 10 percent? *I need anyone to help me please* And in case someone ...

*Wednesday, February 22, 2017 by kelvin*

**Math**

Use the table of values. x y -2 -5 0 -1 1 1 2 3 A. Graph the ordered pairs. B. Is the function linear? Explain. C. Write a rule for the ordered pairs in terms of x and y. D. What is the value of y when x = 10?

*Wednesday, February 22, 2017 by Anonymous*

**math**

Find the cost of buying 4 dozen of exercise books at sh 6000 per dozen,a half dozen of pencil at sh 2050 per dozen,5 dozen rulers at sh 3600 per dozen #i need anyone to help me please# and in case someone know where i can get such the questions,i am kindly need for practice *...

*Wednesday, February 22, 2017 by kelvin*

**Math Derivatives**

Find f''(2) of function f(x)=xsin(pi/x)

*Wednesday, February 22, 2017 by Anon*

**Math - Related Rates**

Air is being pumped into a spherical balloon at a rate of 2 cubic meters per minute. At what rate is the radius changing when the volume of the balloon is 36pi cubic meters?

*Wednesday, February 22, 2017 by Sophie*

**Math**

Find a formula for D^n_x(1/x). (The n is superscript and the x is subscript)

*Wednesday, February 22, 2017 by Anonymous*

**Math**

If a recipe calls for 4 eggs for 8 people how many eggs would it be for 32 people

*Wednesday, February 22, 2017 by Angel*

**Math**

Consider a number. Greater than 2 which do you think is larger, the sum if you add a number to itself 10 times, or the product if you multiply the number by itself 10 times? Explain

*Wednesday, February 22, 2017 by Mia*

**Math**

Rod is 6feet tell he casts a 3-foot-long shadow at the Same time a tree casts an 8-foot-long shadow what is the height of the tree

*Wednesday, February 22, 2017 by Lizbeth*

**math**

the bulletin board in Shain's classroom is 3 1/4 feet by 4 1/2 feet. what is the area of the bulletin board? is this right? 24 1/2 ?

*Wednesday, February 22, 2017 by Lindsey*

**Math**

Felisa will carpet her rectangular living room shown below. The carpet she selected is sold by the square yard, at a cost of $32 per square yard. To the nearest dollar, how much will it cost to carpet the living room?

*Wednesday, February 22, 2017 by Anonymous*

**math**

you want to use a square section of your yard for a garden. You have at most 52 feet of fencing to surround the garden. write and solve an inequality to represent the possible lengths of each side of the garden. Math - Dylan, Tuesday, March

*Wednesday, February 22, 2017 by Sweg Man Jones*

**math**

Jude's kayak is 10 feet and 2 inches long. Alexa's kayak is 29 inches longer. How long is Alexa's kayak?

*Wednesday, February 22, 2017 by kill*

**Math**

You have $80 and your brother has $275 dollars. You save $10 of your allowance each week. Your brother spends his allowance plus $15 each week. A. Write an equation to model this. B. How long before you have as much money as your brother? C. How much have you saved when you ...

*Wednesday, February 22, 2017 by Anonymous*

**Grade 7 math**

Bob currently has $1,000 in a saving account he saves $25 per month he saves the same amount each month and does not take any money out of the account and how many months will boris have 1,450

*Wednesday, February 22, 2017 by Spy girl*

**Math**

The most Gabriel has ever earned delivering newspapers is $43 in one day. Write an inequality showing the amount Gabriel earns delivering newspapers.

*Wednesday, February 22, 2017 by Aliana*

**Math**

How many cubes with 1/4-foot side lengths will fit inside 77ft3 if they are packed with no gaps

*Wednesday, February 22, 2017 by Cindy*

**Math**

Hello everyone. I have a math problem that I need a bit of help with please. Ava wants to ride the Rip Ride Rocket roller coaster at Universal Studios. She knows that she has to be at least 40 inches tall. If h represents the height of the children that CANNOT ride the coaster...

*Wednesday, February 22, 2017 by Patrick*

**math**

Name the angle that is supplementary to <COD a.<COA B.<BOC C.<COB D.<BOA

*Wednesday, February 22, 2017 by help me please*

**Math**

How many cubes with 1/4-inch side lengths will fit in a 87 1/2 if they are packed with no gaps?

*Wednesday, February 22, 2017 by Cindy*

**math**

name the angle that is supplementary to <COB

*Wednesday, February 22, 2017 by help me please*

**math**

the sex of

*Wednesday, February 22, 2017 by carry on*

**math**

find the measures of the complement and the supplement of an angle with measure 50 degrees

*Wednesday, February 22, 2017 by help me please*

**math**

3. The measure of angle A is 73 classify the angle as acute right obtuse or straight (1 point)

*Wednesday, February 22, 2017 by help me please*

**math**

if one sixth of a number is added to one eighth of the same number, the result is 35. find the number?

*Wednesday, February 22, 2017 by Sandra*

**math help asap**

For the data in the table does y vary directly with x? if it does write an equation for the dorect variation. x;y 10,15 16,24 20,30 a:yes; y=1.5x b:yes;y=2x c:yes;y=x+5 d: y does not vary directly with x if you are from connections and know any other answers/know to help with ...

*Wednesday, February 22, 2017 by anon*

**math**

Make a conjecture and give a general term for this pattern

*Wednesday, February 22, 2017 by Bliezo*

**Math. Fair race project help!**

Animal one: coyote Max speed: 43 mph Anime two: elk Man speed: 45 mph Rough draft: d= distance in miles T= time in hours. Coyote: d=43t Elk: d= 45t Final draft: Animal ones fair race equation:? Animal two fair race equation:? Please help!

*Wednesday, February 22, 2017 by Thanks*

**Math**

a net for each three dimensional figure would always have six congruent rectangular regions A. triangular prism b. rectangular pyramid c. hexagonal pyramid d. hexagonal prism

*Wednesday, February 22, 2017 by Please Help Me*

**Math**

Find two numbers a and b whose sum a+b is -1 and whose difference a−b is 5. I do not understand the question

*Wednesday, February 22, 2017 by Nathan*

**Math word problem**

The admission fee at an amusement park is $ 1.50 for children and $ 4.00 for adults. On a certain day, 258 people entered the park, and the admission fees collected totaled $712 . How many children and how many adults were admitted? I tried doing it this way; x = amount of ...

*Wednesday, February 22, 2017 by Nathalie*

**math**

3.A rectangular prism has a width of 92ft and a volume of 240ft.Find the volume of a similar prism with a width of 23ft.Round to the nearest tenth, if necessary. 4.A pyramid a height of 5in. and a surface area of 90in^2.Find the surface area of a similar pyramid with a height ...

*Wednesday, February 22, 2017 by anndreana*

**Math**

The product of (4z2 + 7z – 8) and (–z + 3) is –4z3 + xz2 + yz – 24. What is the value of x? What is the value of y?

*Wednesday, February 22, 2017 by anonymous*

**Math**

Lilla read 1/5 of her book last week. This week she read 3 times as much as she read last week. Write an expression to show how much of her book she has left to read. Then simplify the expression.

*Wednesday, February 22, 2017 by Caden*

**Math**

Pawan is twice as old as ruby . 3years ago he was 3 times as old as ruby .how old is pawan now

*Wednesday, February 22, 2017 by Sushma more*

**Math**

Just need help to start this problem. Given f(x)=x^3+3x+1 is one to one. Without actually determining the inverse function f^-1, compute the following (show and discuss your work. f^-1(-3)

*Wednesday, February 22, 2017 by Mekhia*

**math**

a man bought 360 eggs at rs 12 per dozen. 60 eggs were broken and 30 were rotten. find his profit and loss percent . if he sells the rest of the eggs at rs 15 per dozen.

*Wednesday, February 22, 2017 by abc*

**Math**

Country A has a population of 102.4 million people and total land area of about 150.7 thousand square miles. What is the population density (the # of people per square mile?

*Wednesday, February 22, 2017 by Josh*

**Math**

Construct an isosceles triangle PQR in which PQ = PR, base QR = 5.6 centimetres, angle PQR = 75 degrees using a ruler and a pair of compasses. Draw its lines/line of symmetry.

*Wednesday, February 22, 2017 by Harry*

**math**

Of the following fractions: 9/19, 5/11, 7/15, and 11/23, which is the largest?

*Tuesday, February 21, 2017 by Anonymous*

**Math**

What is compatible numbers and how do you find compatible numbers?

*Tuesday, February 21, 2017 by Awesome troller*

**Math**

Which quadrilaterals appear to have 4 sides of equal length

*Tuesday, February 21, 2017 by Nykerria Jones 2-21-17*

**Math**

10 animals 36 legs How many have 2 How many have 4 10X2 =20 36-20 = 16 Is that right?

*Tuesday, February 21, 2017 by Key*

**Math**

A sixth number will be added to the list. What must it be in order for the mean to be 12? (Use algebraic equation to help)

*Tuesday, February 21, 2017 by Leah*

**Math**

Danielle spend 2/5 of her paycheck on bills. Her water bill was 1/6 of what she spent on bills. What part of her paycheck went to her water bill? Is this right? 1/6 x 2/5 = 2/30 = 1/15? Thanks.

*Tuesday, February 21, 2017 by Lindsey*

**Math**

If Emmy bought a rectangular peice of land that was 3 miles long anda 2 miles wide, Fifty percent of they land was farmed. How many square miled COULD be farmed

*Tuesday, February 21, 2017 by Bri*

**Math**

Good evening. I posted a math question earlier that I never received any help on because someone posted something inappropriate. My new math problem is as follows: The area of a rectangular piece of a land is 3/16 square miles. If the width of the piece of land is 1/6 mile ...

*Tuesday, February 21, 2017 by Donald*

**Math**

A bicycle that usually sells for $230 is on sale for 15% off. Find the sale price. Is this correct 230/25=9.2 230-9.2=220.8

*Tuesday, February 21, 2017 by Anonymous*

**Math**

An artist transferred a rectangular design 13cm long and 6cm wide to a similar canvas 260cm long and 120cm wide.what is the scale factor

*Tuesday, February 21, 2017 by Arthur*

**Math**

The ordered pairs represent a function (0,-1). (1,0), (2,3), (3,6), and (4,15) a. graph the ordered pairs and describe the pattern. Is the function linear or nonlinear? I said nonlinear. b. Write an equation that represents the function. I don't know what the slope would be, ...

*Tuesday, February 21, 2017 by Hodness*

**Math, data management**

How many different ten digit telephone numbers contain four 2's, three 3s, and three 7s? I tried sorting the numbers out in order 2 2 2 2 | 3 3 3 | 7 7 7 10!/2!3!7! But I couldn't find the correct solution as the answer was 4200

*Tuesday, February 21, 2017 by Deval*

**Math**

36 is .9% of what number?

*Tuesday, February 21, 2017 by Madi*

**Math**

Adam cuts the cake into equal-sized pieces. Each piece has a length of 5 centimeters, a width of 5 centimeters, and a height of 3 centimeters. How many pieces of cake does Adam have? I stated 75, I used the volume equation l x w x h.

*Tuesday, February 21, 2017 by Anne*

**Math**

I am a multiple of 9 if you divide me by 8 there is 7 remaining

*Tuesday, February 21, 2017 by Bo*

**math**

If 8/14=4/d, what is the value of d?

*Tuesday, February 21, 2017 by Unknown*

**math**

Is the given value a solution of the inequality? x-5<5,x=15

*Tuesday, February 21, 2017 by emma*

**Math**

A toy store has found that 30% of its customers spend more than $40 each visit. What is the probability that the next two customers will each spend more than $40?

*Tuesday, February 21, 2017 by Sarah*

**Math/velocity**

At time t seconds, the center of a bobbing cork is y=4sint centimeters above (or below) water level. What is the velocity of the cork at t = 0, π/2, π

*Tuesday, February 21, 2017 by Anonymous*

**math**

1.What is the diameter of a sphere that has a volume of 3052.08 m^3? My answer is: 9m 2.What is the radius of a sphere that has a volume of 2304π m^3? My answer is:12m ~If i get it wrong please explain it to me how to get it, i know the formula and how to solve it with points...

*Tuesday, February 21, 2017 by Jakis*

**Math derivatives**

Let f(2)=3, g(2)=4, f'(2)=5, g'(2)=6, f'(3)=7, g'(3)=8, etc. find (f∘g)′(2)

*Tuesday, February 21, 2017 by Anonymous*

**Math - Calculus**

Directions (or bearings) on Earth are measured in degrees, running from zero to 360 degrees, clockwise, starting with 0 degrees being due North. So due East for example, is 90 degrees, due South 180 degrees, and Northwest is 315 degrees. You are swinging a rock clockwise (...

*Tuesday, February 21, 2017 by Jamie*

**math**

The upward velocity, v, of the water in a fountain is 28 more than the product of -32 and t, where t is the number of seconds after the water leaves the fountain. As the water moves upward, its velocity decreases until it reaches the top where the velocity is zero. A. Write an...

*Tuesday, February 21, 2017 by .I.*

**Math**

A line segment has one endpoint of (-3,2) and an undefined slope. Find the coordinates of another possible endpoint.

*Tuesday, February 21, 2017 by Anonymous*

**Math**

The upward velocity, v, of the water in a fountain is 28 more than the product of -32 and t, where t is the number of seconds after the water leaves the fountain. As the water moves upward, its velocity decreases until it reaches the top where the velocity is zero

*Tuesday, February 21, 2017 by .I.*

**Math**

May has $10.she gets $45 from her mom.How many dollars does she have?How many more dollers does she need to make $100?

*Tuesday, February 21, 2017 by Liora*

**Algebra/Math/Offical**

a ib is 25% of

*Tuesday, February 21, 2017 by GeniusTigeress*

**Math**

Ricardo has a $50.00 gift card for an electronics Store. He also has a coupon good for $10 off his Purchase. Let a represent the amount of merchandise Ricardo can buy from the store using his gift card and coupon. Graph the solution set for a on the number line. Would my ...

*Tuesday, February 21, 2017 by Donald*

**Math**

A line segment has one endpoint of A (2, -1) and a slope of 3/4. Find the coordinates of another possible endpoint B.

*Tuesday, February 21, 2017 by Anonymous*

**Math**

The letters in the words ALGEBRA, GEOMETRY, and CALCULUS are represented by the sets V= {A, L, G, E, B, R}, W= {G, E, O, M, E, T, R, Y}, and X={C, A, L, U, S}, respectively. I don't understand this can someone help?

*Tuesday, February 21, 2017 by EmberShy*

**math**

s= 1800-140X where the x is the ticket price. expenses are $750. Write an equation for the income as a function of ticket price same numbers what would the profit be? Thanks

*Tuesday, February 21, 2017 by dob*

**math**

allison is making a 16 inch necklace. the first 41/4 inches are filled with red beads and 8 3/8 inches are filled with blue beads. how many inches are filled with beads?

*Tuesday, February 21, 2017 by nora*

**Algebra/Math/Offical**

b min is 200% of

*Tuesday, February 21, 2017 by GeniusTigeress*

**Math**

use the remainder theorem to find the remainder when P(x) = x^4-9x^3-5x^2-3x+4 is divided by x + 3 please help me start this problem I have no idea

*Tuesday, February 21, 2017 by Tyler*

**math**

a rectangle is three times ad long as its breadth. if the perimeter of rectangle is 40m, find its length and breadth

*Tuesday, February 21, 2017 by Mohammed*

**Math**

Lisa is running around the circular track x^2+y^2=10000, whose radius is 100 meters, at 4 meters per second. She starts at point (100,0) and runs in the counterclockwise direction. After 30 minutes of running, what are her coordinates?

*Tuesday, February 21, 2017 by Nick*

**Math**

A cellular phone company offers two types of monthly plans. Plan A: 10 cents per minute Plan B: a monthly fee of $10 plus 7.5 cents/minute Define the appropriate variables and write an equation relating the cost and the numbers of minutes for each plan.

*Tuesday, February 21, 2017 by Annabelle*

**math**

what is the correct classification for the triangle shown below

*Tuesday, February 21, 2017 by hashk*

**Math**

A recipe that makes eight servings calls for 2 cups of milk how many cups of milk will be needed for 36 servings

*Tuesday, February 21, 2017 by Anonymous*

**Math**

A water tank is being filled with water. The volume of water in the water tank varies with time. The tank contains 200 liters of water after 2 minutes. Define appropriate variables, and write an equation relating the volume of water and time. What does the constant variation ...

*Tuesday, February 21, 2017 by Annabelle*

**math**

In the 1870's, on a farm along the Ohio River, a girl was presented with three gifts: a rooster, a goose, and a duck. The duck had cost 20 cents. The rooster and the goose together cost twice as much as the duck. The goose and the duck together cost three times as much as the ...

*Tuesday, February 21, 2017 by kim*

**math**

A rock is thrown upward with a velocity of 25 meters per second from the top of a 50 meter high cliff, and it misses the cliff on the way back down. When will the rock be 7 meters from the water, below?

*Tuesday, February 21, 2017 by kyran*

**Math**

A peice of ribbon 63cm long to be cut into two peices in ratio 2:5.find the length of each peice ?

*Tuesday, February 21, 2017 by shashi*

**Math**

How many 2 cm cubes can i cut at six 9 cm cubes?

*Tuesday, February 21, 2017 by Peachie*