What is the area of a trapezoid whose parallel sides are 6' and 10' and whose height is 4' ? Find the volume of a right circular cone whose base has an area of 9 sq. in. and whose height = 6 inches.

Find the volume of a right circular cylinder whose base has an area of 9 sq. in. and whose height = 6".

List the sides of δrst in in ascending order (shortest to longest) if: m∠r =x+28°, m∠s = 2x+16°, and m∠t = x+12°

At the olympic games, many events have several rounds of competition. one of these events is the men's 100-meter backstroke. the upper dot plot shows the times (in seconds) of the top 8 finishers in the final round of the 2012 olympics. the lower dot plot shows the times of the same 8 swimmers, but in the semifinal round. which pieces of information can be gathered from these dot plots? (remember that lower swim times are faster.) choose all answers that apply: a: the swimmers had faster times on average in the final round. b: the times in the final round vary noticeably more than the times in the semifinal round. c: none of the above.

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.