Simplify:

{(-8)^-4 ÷ 2^-8}^2

Rob spent 25%, percent more time on his research project than he had planned. he spent an extra h hours on the project. which of the following expressions could represent the number of hours rob actually spent on the project? two answers

If y varies directly as x2 and y=6 when x=6, find the constant of variation.

The sum of the squares of two numbers is 8 . the product of the two numbers is 4. find the numbers.