There are 15 students going on a field trip to a museum. 2/5 of these students have never been to the museum. Which Method Will Help you find the number of students who have never been to the museum?

A. Divide By 15 by 5 and then multiply that quotient by 2.

B. Multiply 15 and 5/2

C. Multiply 1/15 and 2/5

D. Multiply 15 By 5 and then Multiply that product by 2.

Flashback to semester a. are triangles pqr and stu congruent? what is the congruency that proves they are congruent? what is the perimeter of triangle pqr? show your work.

Evaluate the expression for the given value of the variable. | ? 4 b ? 8 | + ? ? ? 1 ? b 2 ? ? + 2 b 3 -4b-8+-1-b2+2b3 ; b = ? 2 b=-2

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.