What are the measures of the angles located at positions a, b, c, and d? Explain your reasoning for each answer.

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

Which of the following constants can be added to x2 - 3x to form a perfect square trinomial?

Which of the following is the sum of 3 1/6 + 6 3/8?