What is the smallest number could multiply 28 by to get a square number

In the diagram, the measure of angle 9 is 85° which angle must also measure 85°?

Find the value of x. give reasons to justify your solutions! l, m ∈ kn

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)