Evaluate 10x^2y^–2 for x = –1 and y = –2.

The perimeter of a movie screen is 54 meters. the screen is 18 meters wide. how tall is it?

What is the surface area of the sphere?

The human resources manager at a company records the length, in hours, of one shift at work, x. he creates the probability distribution below. what is the probability that a worker chosen at random works at least 8 hours? 0.62 0.78 0.84 0.96