The probability that student fred sotiropulus takes history 101 next semester is 0.6 and the probability that he takes psychology 101 is also 0.6. what is the probability that he takes at least one of these two courses next semester?

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