Find the perimeter area and area of the polygon.

Ten times the square of a non-zero number is eqaul to ninety times the number

A)a square brown tarp has a square green patch green in the corner the side length of the tarp is (x + 8) and the side length of the patch is x what is the area of the brown part of the tarpb)a square red placemat has a gold square in the corner the side length of the gold square is (x - 2) inches with the width of the red region is 4 in what is the area of the red part of the placemat

If x varies directly as y, and x = 7.5 when y = 10, find x when y = 4