If you need to divide 2/3 by 4/5 , why is it easier to use an equation than to use a model?

Look at this expression. a3b3c a-3b-3c-1 which of the following is the simplest form of the expression above?

4. find the geometric mean of 4 and 12. 24 8

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.