9.8 as a fraction in simplist form

If x = 12 and y = 3, what is the value of x - y 2? 81 6 3 18

Solve the system of equations y= 3/2 - 1, -x+ y =-3

Adecorative window is made up of a rectangle with semicircles at either end. the ratio of ad to ab is 3: 2 and ab is 30 inches. what is the ratio of the area of the rectangle to the combined area of the semicircles? possible answers: a. 2: 3 b. 3: 2 c. 6: π d. 9: π e. 30: π