113 Answered Questions for the topic Problem

11/08/15

#### David Chow earns 42,000 a year

David Chow earns 42,000 a year. He is paid weekly. He is married, has no depnedents, and claims 2 withholding allowance for federal income tax purposes. The state tax rate is 2% of taxable income....
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Problem Worded

11/05/15

#### A worded problem

Redlands School sent x students to a revision day. St Samuels School sent twice as many students as Redlands School. Francis Long School sent 7 fewer students than Redlands School. Each student...
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#### Fraction Word problem?

On their vacation the Reikos spent 1/4 of their money on gas, 1/4 on food and lodging,and 1/8 on tourist attractions. What fraction of their money did they spend? If they started with $840 how much...
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#### please help

The graph shows the lines 5x+4y=7 and x-3y=9. Based on the graph, estimate the solution of the system of equations:
5x+4y=7
x-3y=9

#### please help

Use substitution to solve the following system of equations:
4x-y=5
2x+3y=-8

#### please help

Use addition to solve the following system of equations:
2x+3y=5
4x+y=-5

10/18/15

#### please help

Perform the following computations, leaving your answers in scientific notation:
A) (4.1x10^5)(3.0x10^-2)
B) (1.2x10^-4)(2.0x10^7)÷(6.0x10^9)

#### help please

Simplify these expressions:
A) {(2x^2y^3)÷(3xy^4)}^2
B) {(x^3y^-2)÷(x^-1y^5)}^-1

#### help please

Perform the indicated operations:
A) (2x^3-3x^2+x-1)-(x^3-3x+4)
B) (x^2-2x-1)(x+3)

#### help please

Factor the following polynomials completely:
A) 3x^4-12x^2
B) 4x^2-12x+9
C) 6x^2-x-12
D) 3x^3+3x^2y-18xy^2

10/06/15

#### Inequalities

On my math paper I had the following equation:
5/4(x+4) ≤ ½(x+8) -8
This is my work:
5/4(x+4) ≤ ½(x+8) -8
4(5/4(x+4) ≤ ½(x+8) -8)
5(x+4) ≤ 2(x+8) -32
5x+20 ≤ 2x+16-32
-2x ...
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Problem

10/01/15

#### The second and third digits are the same. The first and last digits differ by the second. The first digit is also a perfect cube.

The second and third digits are the same. The first and last digits differ by the second. The first digit is also a perfect cube.

Problem

09/12/15

#### a wire of length 60 cm is cut into 2 parts. Each part is then bent to form a square. If the total area of the two square is 117 cm^2, find the perimeter

a wire of length 60 cm is cut into 2 parts. Each part is then bent to form a square. If the total area of the two square is 117 cm^2, find the perimeter

09/09/15

#### Word problem equation help

When a city had 21000 inhabitants, there were 250 businesses operating there. For every new 150 residents, one more business opened. Write an equation that relates the number of people in the city...
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Problem

09/07/15

#### what is the length of the diagonal in cm?

The width of a rectangle is 6 less than twice it's lenght. If the area of the rectangle is 23 square centimeters.

09/06/15

#### You’ve been asked to make a 50 mL of 2% dextrose solution from a 30% dextrose stock. How much diluent will you need for the mixture? How much stock would you ne

You’ve been asked to make a 50 mL of 2% dextrose solution from a 30% dextrose stock. How much diluent will you need for the mixture? How much stock would you need to make 150 mL of 5% solution?

09/06/15

#### 1 mol of carbon-12 contains 6.022 x 1023 carbon-12 atoms with a mass of 12 g.

1 mol of carbon-12 contains 6.022 x 1023 carbon-12 atoms with a mass of 12 g.
A. Calculate the mass of one carbon-12 atom. Express your answer using scientific notation.B. Calculate the number of...
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Problem

09/04/15

#### The sum of two numbers is 14, what could the two numbers be?

Need to find the answer of this 2 nd grade math problem

Problem

08/27/15

#### Find the number of rows and the number of chairs per row

In a classroom, there are 54 chairs. The number of chairs per row is three less than twice the number of rows. Find the number of rows and the number of chairs per row.

Problem

08/26/15

#### The length of a rectangle is 6 inches longer than it is wide. If the area is 55 square inches, what are the dimensions of the rectangle?

i need the width and length

#### You walk into a room with 5 other people in it. What is the probability that one or more of them has a birthday in the same month as yours?

I know you use a formula such as 1 – P(not event A in n trials)

Problem

05/13/15

#### Help solving problem

projectile is launched upward with an initial velocity of 40 ft per second from the edge of a platform that is 56 feet above the ground. Use the function h(t)=-16t2+v0t+s

02/20/15

#### Who will win the second race and by how amny seconds?

jack and jill ran a 100 meter race. Jill ran the race in 10 sec and won by 10 meters; that is jack had run 90 meters while jill crossed the finish line. They race again, but this time jill started...
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02/02/15

#### maths problem

A basket ball team has 5 players and one reserve. the mean weight of the 5 players is 58kg the reserve weighs 64 kg whats the mean weight of all 6 players

Problem

01/15/15

#### How much was his profit

A shopkeeper pays 25 dollars for one box of 96 scented candles. He sells all the candles for 35 cents each.

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