How much is - 21 - (-8) ?

What is the solution to the proportion? 6/15=x/20 x=4 x = 12 X=12 x = 8 x = 2.5

A 12-ft chain weighs 24 lb and hangs from a 10-ft high ceiling. Find the work needed to lift the lower end of the chain to the ceiling so that it is level with the upper end

Write a multiplication story for 4x9 then find the product

Nine percent of men are color blind. Researchers need at least 60 men with this trait, so they randomly select 700 men. Estimate the probability that at least 60 color-blind men are in the sample.

Stan drove for h hours at a constant rate of r miles per hour. How many miles did he cover during the final 20 minutes of his drive?

A deck is shuffled and two cards are dealt. (a) Find the chance that the second card is a heart given the first card is a heart. (b) Find the chance that the first card is a heart and the second card is a heart.

Simplify 5 (x + 4) + 10 - 2x + 3 (2x + 9)

A school is painting its logo in the shape of a triangle in the middle of its sports field. The school wants the height of the triangle to be 4 feet. The area of the logo must be at most 14 square feet. (The school doesn't want to buy more paint.

Which is the simplified form of the expression

A square sticky notes has sides that are 15 centimeters long what is the area of the sticky notes