triangle DEF has vertices D(-2,-1), E(-1,1) F(1,-1). graph DEF and is image after a rotation of 115° clockwise about the point (-4,-2)

Cd is the perpendicular bisector of both xy and st, and cy=20. find xy.

Idon't get undoing if its pass adding and subtracting so can someone ? x-2 over 5 = 18

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