The length of an adult female frilled sharks are normally distributed with a mean 1.4 m and standard deviation 15 cm. find the proportion of adult female frilled sharks that measure: a) more than 1.25m b) between 1.1m and 1.55m​

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?

Ten members of balin's soccer team ran warm ups for practice. each member ran the same distance. their combined distance was 5/6 of a mile. to find the distance that each member ran, balin wrote the expression below.

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.