Which frequency table shows the test times (in minutes) for a reading test? 81,63,61,58,72,79,68,82,64 54,82,72,63,64,76,57,65,73,58

The depth of a lake at a certain point, wich is a function of the distance of that point from shore, is 30 feet.

What is the frequency of the sinusoidal graph?

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