Which transformations had to occur for the blue triangle to become the purple triangle? [Note: All rotations are about origin]
A) rotated 180° then translated down 3 units and left 2 units
B) reflected over x-axis and then rotated 90° clockwise
C) translated down two units and rotated 90° counter-clockwise
D) rotated 90° clockwise then translated down 3 units and left 2 units

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.

If sr is 4.5cm and tr is 3cm, what is the measure in degrees of angle s?

98 point question what is the record for most points in one