Help, i don’t know the answers! who can help me?

Your food costs are $5,500. your total food sales are $11,000. what percent of your food sales do the food costs represent?

Segment an is an altitude of right δabc with a right angle at a. if ab = 2, squared 5 in and nc = 1 in, find bn, an, ac.

Rationalize the denominator- 12x/√x-10