Mrs. Kessler bought six books and four CD's. If each CD cost $10, how much did Mrs. Kessler pay for the CD's?

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.

What are the coordinates of the point that is 1/3 of the way from a to b? a (2,-3) b (2,6)

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?