If using the method of completing the square to solve the quadratic equation x^(2)+20x-6=0, which number would have to be added to "complete the square"?

Abcd ≅ klmn ≅ pqrs ≅ wxyz given that information, which figures are reflections of abcd?

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?

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?