In an arithmetic sequence, the seventh term is −9 and the nineteenth term is 39. Find the common difference. Give only the exact value as your answer.

The composite figure is made up of a parallelogram and a rectangle. find the area. a. 76 sq. units b. 48 sq. units c. 124 sq. units d. 28 sq. units

The radius of a sphere is 3 inches. which represents the volume of the sphere?

At the beginning of year 1, carlos invests $600 at an annual compound interest rate of 4%. he makes no deposits to or withdrawals from the account. which explicit formula can be used to find the account's balance at the beginning of year 5? what is, the balance?