Solve.

(-k) + k =

A. k

B. 2k

C. - 2k

D. 0

And

Solve.

15 + (-15) =

A. 15

B. 30

C. - 15

D. 0

Mara wants to use tiles to cover the bottom of a rectangular box that measures 24 inches long by 2 inches wide. She has 20 small square tiles with side lengths of 1 inch and 10 large square tiles with side lengths of 2 inches.

If the property tax on a 300,000 Is 2,220 what is the tax on a 100,000 home

A rectengular school gym has a length of 120 feet and a perimeter of 520 feet. What is the width, in feet, of theschool gym

Find the length of an arc made by a 180-degree central angle in a circle with a 10ft radius

At the grocery store, 5 pints of ice cream cost $7.20. How much would 20 pints of ice cream cost?

Is a√ (b) * c√ (d) equal to √ (a^2*b*c^2*d) ?

How is 2.725 x 10^-7 written in standard form

What is the cost of 2 kilograms of flour is 3 kilograms cost $4.86 in the unit price for each package of flour is the same

Explain why it is possible to draw more than two different rectangles with an area of 36 square units but it is not possible to draw more than two different rectangles with an area of 15 square units. The sides of the rectangles are whole numbers

The car went 300 miles and used 10 gallons what is the unit rate in this problem