Which expression is equivalent to the expression below? (x/x+4)/x

a. (x/x+4)(x/1)
b. (x/x+4)(1/x)
c. (x+4/x)(1/x)
d. (x+4/x)(x/1)

What is the slope simplify your answer and write it as a proper fraction, improper fraction, or integer

1. what is the measure of ∠abc? what is the measure of ∠abd?

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.