Which expression is equivalent to 3 7/8 - 6 1/4 Choose 1
3 7/8 + (6 1/4)
-6 1/4 +(-3 7/8)
6 1/4 - (3 7/8)
3 7/8 + (-6 1/4)

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