The fifth grade classes at stonyville school use 5 identical buses to go on a field trip. there were a total of 40 seats on each bus. all the seats on 4 buses were filled. the 5th bus had 4/5 of the seats filled. 1/8 of all the passengers on the buses were adults. how many adults went on the field trip with the fifth grade classes ?

Select the correct answer from each drop-down menu. the length of a rectangle is 5 inches more than its width. the area of the rectangle is 50 square inches. the quadratic equation that represents this situation is the length of the rectangle is inches.

Aword processing program requires a 7- digit registration code made up of the digits 1,2,4,5,6,7 and 9 each number has to be used and no number can be used mor than once how many codes are possible

Set $r$ is a set of rectangles such that (1) only the grid points shown here are used as vertices, (2) all sides are vertical or horizontal and (3) no two rectangles in the set are congruent. if $r$ contains the maximum possible number of rectangles given these conditions, what fraction of the rectangles in set $r$ are squares? express your answer as a common fraction.