Work out the value of each expression, when r= 2.5 and t = 6. a) 4 (t - r)
b) 4t - r
c) 2(3t - 10)
d) (t - 2) ²
e) t
- + 4r - 3
3
f) 6r+t
——
3

For each proportion find the unknown number x 1/5/8=×/15

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 is the percentile for data value 6 in the following data set? 4 13 8 6 4 4 13 6 4 13 2 13 15 5 9 4 12 8 6 13 40 25 35 62