Find the value of x .
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M
(2x – 10) (2x + 40)º
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The rectangle on the right is the image of the rectangle on the left. what transformation would result in this image? reflection rotation translation dilation

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.

Anna is constructing a line segment that is congruent to another segment ab. for the construction, which tool should be used to mesure segment ab