This is a triangle which has one 90-degree angle.

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?

Let f (x) = 6-1x+15x^2. Calculate the following values: f (a) = f (a+h) = f (a+h) - f (a) h = for h≠0

P=2a+2b solve for a

Juliet baked 30 brownies for a party. she gave 6 brownies to a friend. What percent of the brownies did juliet give het friend

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)