A pupil recorded the times of 23 people running the 100 metres. The stem-and-leaf diagram shows the results.
13
14
14
6
1
7
3
4
7
8
9
15
1
1
3
4
4
N On oN
15
N-
7
8
8
9
16
4
4
What was the range of times?

Which point lies on a circle with a radius of 5 units and center at p(6, 1)?

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.

Sundar used linear combination to solve the system of equations shown. he did so by multiplying the first equation by 5 and the second equation by another number to eliminate the y-terms. what number did sundar multiply the second equation by? 2x+9y=41 3x+5y=36