A taut telephone wire extends 9 meters from a telephone pole to a stake in the ground 3 meters away. How tall is the telephone pole? If necessary, round to the nearest tenth.

What is the product of the radical expression. (7-2square root) (8+2 square root)

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.

Solve each quadratic equation by factoring and using the zero product property. n^2 - 49 = 0