What is the percent of decrease from 9,000 to 4,000? Round your answer to the nearest tenth of a percent and include a percent sign (%).

What is the probability of drawing three queens from a standard deck of cards, given that the first card drawn was a queen? assume that the cards are not replaced.

If the scale factor between two circles is 2x/5y what is the ratio of their areas?

Find the unit rate for: 75% high-fiber chimp food to 25% high -protein chimp food.