What is 25 over 28 simplified

Find the value of x for which abcd must be a parallelogram -9-6x x-30

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

When solving this problem: 3025/5.5 = a/90.75 you get 49912.5 which would be the length of one of the sides of a square when the area is only 90.75 inches. is that answer correct, why, and how is it possible?