Astudent takes an exam containing 18 true or false questions. if the student guesses, what is the probability that he will get exactly 6 questions right? round your answer to four decimal places.

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.

In the diagram, gef and hef are congruent. what is the value of x

Find the solution(s) to x^2-14+49=0