# Homework Help: Math

## Branches of Math

## Recent Math Questions

**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*

**math**

A woman deposited Tsh 480000 in CRBD which charges an interest of 15% per annum.How much did she get after six months?# anyone to help me plz#

*Tuesday, February 21, 2017 by kelvin*

**Math**

2 3/5+1 7/10)-4/5?

*Tuesday, February 21, 2017 by Sameena*

**math**

The Toro Ski club is planning a ski trip for the upcoming long weekend. They have 40 skiers signed up to go, and the ski resort is charging $120 per person. The resort manager offers to lower the rate per person by $2 for each additional skier up to a maximum number m. (So if ...

*Tuesday, February 21, 2017 by Sam*

**math**

If a hen and a half can lay an egg and a half in a day and a half, then how much time is needed for three hens to lay three eggs?

*Tuesday, February 21, 2017 by Sam*

**Math**

A wire is stretched from the top of a two feet tall anchor to the top of a 45 foot tall antena. If the wire is straight and has a slope of 3/5, then what is the length of the wire in feet?

*Monday, February 20, 2017 by Anonymous*

**Math 115**

While solar energy powered home systems are quite expensive to install, adding some passive energy features to conventional construction can make a substantial reduction in heating and cooling costs. Passive solar requires no machinery and uses the building itself to collect, ...

*Monday, February 20, 2017 by Stacy*

**math**

From the top of the control tower 250 m tall, an airplane is sighted on the ground below. If the airplane is 170 m from the base of the tower, find the angle of depression of the airplane from the top of the control tower.

*Monday, February 20, 2017 by Daniela*

**math**

A pentagon has a perimeter of 60 inches, a side measures 12 inches. what is the sum of the measures of the interior angles.

*Monday, February 20, 2017 by a parent*

**Math**

According to legend, manhattan islansd was purchased in 1626 for 24 dollars. If the 24 dollars have been invested instead at a rate of 6% interest per year, what would its value be in 2011?

*Monday, February 20, 2017 by Chantal*

**math**

an equilateral triangle has three equal sides , which equation could be used to find the measure,M,of one angle A.180+3=M ---- B.3 x 180 C. 180-3=180 D. 180 divided by 3=M if you know all the answer GREAT!!!

*Monday, February 20, 2017 by harlee*

**Math**

While solar energy powered home systems are quite expensive to install, adding some passive energy features to conventional construction can make a substantial reduction in heating and cooling costs. Passive solar requires no machinery and uses the building itself to collect, ...

*Monday, February 20, 2017 by Karola*

**Math**

Peanuts, walnuts, and cashews are mixed by volume in the ratio 5:3:2, to make a party snack. The number of cups of walnuts needed to make 12 cups of party mix are between: a) 1 and 2 b) 2 and 3 c) 3 and 4 d) 4 and 5 Math - Ms. Sue, Monday, February 20, 2017 at 5:23pm What is ...

*Monday, February 20, 2017 by Terrence*

**math**

20 men dig a trench in 12 days,how many men would be needed to do it in 10 days

*Monday, February 20, 2017 by Anonymous*

**math**

Write the inequality that represents the solution set for −15/9 y <11/13 .

*Monday, February 20, 2017 by z*

**Quantitative Reasoning (MATH)**

If the national economy shrank at an annual rate of 11% per year for three consecutive years, then the economy shrank by 33% over the three-year period.

*Monday, February 20, 2017 by theresa*

**math**

So far this year Nick has scored a 75, 81, 88 and 92 on four of his math tests. Each test is worth a maximum of 100 points. To earn a B this year, Nick needs a test average of 80 or better. Write the inequality that represents this scenario. Let t equal Nick's grade on the ...

*Monday, February 20, 2017 by z*

**math**

1.Nancy is 3 times as old as Cathy. In seven years, she will be ten years older than Cathy. What are their present age?

*Monday, February 20, 2017 by leslie*

**math**

There are 3 red balls and 7 blue balls in Bowl A, and 8 red balls and 2 blue balls in Bowl B. Mandy rolls a die and if a prime number is up, Bowl A is selected; otherwise Bowl B is selected. Then Katie draws a ball randomly from the selected bowl. Find the probability of Bowl ...

*Monday, February 20, 2017 by Andrew*

**Math**

Monica wants to know what she needs to get on the exam to get a certain grade in her English class. The term Mark is worth 70% of the course and exam is worth 30%. The following is the formula used to calculate her overall Mark. Course Mark = term Mark + exam mark C=T/70 +E/...

*Monday, February 20, 2017 by Emma*

**Math**

Kenny will invest $16,000 in an account with an annual interest rate of 5% and the interest is compounded quarterly. How much money will be in the account in 7 years? How will I set this up?

*Monday, February 20, 2017 by Hannah*

**Math**

I am more than 25 and less than 28 I am an even number

*Monday, February 20, 2017 by Itzi*

**Math**

The fruit plants in my garden do not bear fruit during their first summer. The fruits are picked for the next two years and then the plants become too woody and need to be pulled up. Occasionally some of the die over winter. The last five years I had fruit on the following ...

*Monday, February 20, 2017 by Alice*

**math (precalc)**

Find a polynomial with integer coefficients that satisfies the given conditions. R has degree 4 and zeros 3 − 4i and 5, with 5 a zero of multiplicity 2.

*Monday, February 20, 2017 by Kyle*

**math 1**

4x+y=8 2x-3y=1

*Monday, February 20, 2017 by Rocky*

**math 1**

4x+y=2 -2x-3y=1

*Monday, February 20, 2017 by Rocky*

**Math**

Peanuts, walnuts, and cashews are mixed by volume in the ratio 5:3:2, to make a party snack. The number of cups of walnuts needed to make 12 cups of party mix are between: a) 1 and 2 b) 2 and 3 c) 3 and 4 d) 4 and 5

*Monday, February 20, 2017 by Terrence*

**Math**

If a circular railroad crossing sign has a diameter of 30in what should its areas be?

*Monday, February 20, 2017 by A girl*

**math 1**

c-3d=27 4d+10c=120

*Monday, February 20, 2017 by Rocky*

**math 1**

system of linear equations of substitution. a=2/b-3 a=2b-8

*Monday, February 20, 2017 by Rocky*

**Math**

The fruit plants in my garden do not bear fruit during their first summer. The fruits are picked for the next two years and then the plants become too woody and need to be pulled up. Occasionally some of the die over winter. The last five years I had fruit on the following ...

*Monday, February 20, 2017 by Alice*

**Math Algebra**

Solve algebraically using only variable: The length of a rectangle is two less than three times its width. If the area of the rectangle is 65, find the length and the width. (The area of a rectangle is equal to its length times its width.

*Monday, February 20, 2017 by Tony*

**6th grd. MATH QUIZ HELP!!!!**

Questions- 1) Solve the equation 3x=-3=-18 a) x=-7 b) x=-5 c) x=-3 d) x=5 THERE ARE MORE QUESTIONS!

*Monday, February 20, 2017 by Ms. Walker*

**Math**

If goods to be shipped weigh 520 pounds 6ounces and the crates and packaging weigh 21pounds 9ounces what is the gross weight of the shipment?

*Monday, February 20, 2017 by Ernestine*

**Algebra/Math**

How much dry substance is there if we have 150g of 8% of a solution of this substance.

*Monday, February 20, 2017 by GeniusTigeress*

**Math**

In a book closet, mathematics books are kept in stacks of 4. If each student carries no more than one stack, what is the least number of students needed to carry books for a class of 23? Is the answer five or six students?

*Monday, February 20, 2017 by Matt*

**Math**

In a two digit number the tens digit is two less than the units digit.If the digits are reversed, the sum of the reversed and the original number of 154.Find the original number.

*Monday, February 20, 2017 by GeniusTigeress*

**Math**

my divisor is 5 I'm greater than 4 X 5 I'm less than 5 x 5 my remainder is 1 what dividend am I

*Monday, February 20, 2017 by AJ*

**Math**

A number is such that thrice its 14 less than 5 times the number.find the number

*Monday, February 20, 2017 by Dinar basic science*

**math**

Sinx square algerbra of differentiable function

*Monday, February 20, 2017 by jitendra*

**math**

The ratio of the units digit to the tens digit is one-half. The tens digit is two more than the units digit.Find the number.

*Monday, February 20, 2017 by kitty*

**Math**

Problem: Tad draws three cards at random, without replacement, from a deck of ten cards numbered 1 through 10. What is the probability that no two of the cards drawn have numbers that differ by 1? Express your answer as a common fraction. Scott's solution: =============== ...

*Monday, February 20, 2017 by Nikhil*

**Math**

Ms. Allison drew a box-and-whisker plot to represent her students scores on a midterm test. Lowest value=44 Lower quartile=47 Median=72 Upper quartile=81 Highest value=96 Jason received 47 on the test. How does Jason's score compare to his classmates? A. About 25% scored ...

*Monday, February 20, 2017 by Help!*

**math**

A 12-meter high post casts a 19-meter shadow. Find the angle of elevation to the sun. -what is/are given? -formula used -solution

*Monday, February 20, 2017 by Daniela*

**math**

A diagonal of a parallelogram forms 25° and 35° angles with the sides of a parallelogram. Find the angles of the parallelogram.

*Monday, February 20, 2017 by annie*

**math**

An observer in a lighthouse 48.8 m above sea level saw two vessels moving directly towards the lighthouse. He observed that the angles of depression are 42 and 35 degrees. Find the distance between the two vessels, assuming that they are coming from the same side of the tower.

*Monday, February 20, 2017 by Daniela*

**math**

A hiker is 400 meters away from the base of the radio tower. The angle of elevation to the top of the tower is 46 degrees . How high is the tower?

*Monday, February 20, 2017 by Daniela*

**math**

the angle of elevation of the top of the building from a point 30 meters away from the building is 65 degrees

*Monday, February 20, 2017 by Daniela*

**Math**

A large hose will fill a pool in 40 minutes while it takes a smaller hose 60 minutes to fill the same pool. The same pool requires 80 minutes to drain if the drain is open. Suppose one day both hoses are turned on, but by accident the drain was left open. How long would it ...

*Monday, February 20, 2017 by Charlene*

**Math**

the age of the father is square of the age of his daughter . five years hence the fathers is three times as old as daughter .write the quadratic equation

*Monday, February 20, 2017 by Ramesh*

**Math**

How many square meter of wallpaper is required for a wall that has perimeter of 25 feet and 8 feet height

*Monday, February 20, 2017 by Azeezat*

**Math**

Find area of rectangle whose length is 3 cm and 1 diagnal is 5 cm

*Monday, February 20, 2017 by Pooja*

**math**

1]find two possible values for the geometric mean of –1/4 and –4 [2]form a G.P that has two geometric means between (a)1029 and –3 (b) 2/k and 1/4k

*Monday, February 20, 2017 by kel*

**math**

Mrs.Santiago is 36 yrs. old and her son is 4 years old. When will the mother be thrice as old as her son?

*Monday, February 20, 2017 by charlene*

**Math**

While solar energy powered home systems are quite expensive to install, adding some passive energy features to conventional construction can make a substantial reduction in heating and cooling costs. Passive solar requires no machinery and uses the building itself to collect, ...

*Sunday, February 19, 2017 by Karola*

**Math 104**

There are 5 cyclists in a race. There will be a first-place and a second-place prize awarded. In how many different ways can the 2 prizes be awarded?

*Sunday, February 19, 2017 by Anonymous*

**math**

Give an example of an open interval, and an example of a set that is not an open interval. Use proper set notation and explain.

*Sunday, February 19, 2017 by maggie*

**math**

Problem 1:A semi-circular garden has a radius of 10 meters. What is its area? ( Use pi =3.14) Answer:157m^2 Problem 2:The base of a cylindrical tank has a radius of 4.5 meters. What is its area? ( Use pi=3.14) Answer:65.585m^2 Problem 3:In the middle of a field a huge circle ...

*Sunday, February 19, 2017 by edd*

**Math**

At the movie theatre, child admission is $5.50 and adult admission is $9.50. On Saturday, 148 tickets were sold for a total sales of $1170.00. How many adult tickets were sold that day?

*Sunday, February 19, 2017 by Chris Harris*

**Math**

Mr. shows bought movie tickets for the members of his family and spent $12.50 on popcorn. He spent a total of $46.25 for his family to go to the movies. How many tickets did he buy. (Write an equation containing a variable and solve) this is all the information I have. Is this...

*Sunday, February 19, 2017 by Jamye*

**math**

write a sequence of the transformation that maps quadrilateral ABCD onto quadrilateral A"B"C"D" in picture below.

*Sunday, February 19, 2017 by cmac*