The ap calculus exam scores were released in july. the secondary math specialist prepared the box plot shown to present the scores to the superintendent. what's the range of scores that represents the middle 50 percent of the students who took the test? a. 65%–94% b. 65%–89% c. 81%–89% d. 65%–81%

Determine whether the following statements are true and give an explanation or counterexample. bold a. when using the shell method, the axis of the cylindrical shells is parallel to the axis of revolution. bold b. if a region is revolved about the y-axis, then the shell method must be used. bold c. if a region is revolved about the x-axis, then in principle it is possible to use the disk/washer method and integrate with respect to x or the shell method and integrate with respect to y.

The hawaiian alphabet has 12 letters. how many permutations are posible for each number of letters?

Which of the following contains a variable?