David drew two collinear segments PQ¯¯¯¯¯¯¯¯ and QR¯¯¯¯¯¯¯¯ on line k with the following measurements. P.. Q equals 5... Q... R... equals 15.. and P... R equals 20

Which statement about this construction is valid?

Hi my sisters and brothers can tell me the answer because i don’t understand the question

For what values of x is x2 + 2x = 24 true?

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.