A survey of 140 freshmen business students at a local university produced the results listed below. How many students took only psychology? 33 took history;
42 took science;
39 took psychology;
19 took history but not science;
12 took science and psychology;
10 took history and psychology;
2 took all three

Which expression is equivalent to (3^2)^-2 a.-81 b.-12 c.1/81 d.1/12

Factor x2 – 8x + 15. which pair of numbers has a product of ac and a sum of what is the factored form of the

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.