A student needed to find the measure of angle b. He incorrectly said m angle b equals 120 degrees. Find the correct measure of angle b. What mistake did he likely make?

Solve the system of equations. y= 2x y= x^2 - 15

At a sale this week, a desk is being sold for $213. this is a 29% discount from the original price. what is the original price?

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.