The answers are $35 $45 $55 and $65

Express the following as a function of a single angle, cos(60) cos(-20) - sin(60) sin(-20)

Consider the graph of the exponential function y=3(2)×

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