I’m putting the right answer which is “6” but the computer keeps telling me i’m wrong, i don’t understand, what else is there to do?

Jack has a piece of red ribbon that is two times as long as his piece of blue ribbon. he says that he can use two different equation to find out how long his piece of red ribbon is compared to his piece of blue ribbon is. is he correct? explain his reasoning

Use the formulas a = x 2 – y 2, b = 2xy, c = x 2 + y 2 to answer this question. one leg of a right triangle has length 11 and all sides are whole numbers. find the lengths of the other two sides. the other leg = a0 and the hypotenuse = a1

1. how do you convert the repeating, nonterminating decimal 0. to a fraction? explain the process as you solve the problem.