Which angle refers to the same angle as DEF?

You deposit $5000 each year into an account earning 3% interest compounded annually. how much will you have in the account in 30 years?

Another type of subtraction equation is 16-b=7. explain how you would sole this equation then solve it.

*segment an is an altitude of right ? abc with a right angle at a. if ab = 2root 5 in and nc = 1 in, find bn, an, ac.