What two numbers multiply to -168 but add to 13

Explain why the factor 1.5 is broke. into two numbers in the model.

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

Twelve less than a number is at most 20