The square root of 9x^4/36 simplified

If the measure of xyz is 81 what is the measure of yz

What is the first step of an indirect proof of a number that is divisible by two

Isabel graphed the following system of equations. 2x – y = 6 y = -3x + 4 she came up with the solution (2,-2). what were the 3 steps she did to get that solution? (make sure they are in the correct order)