19. Determine if the triangles below are similar. If they are, give the rule that you used to determine similarity.

What is the perimeter of trapezoid jklm? + units 2 + + units 9 + units 9 + + units

Two friends are reading books. jimmy reads a book with 21,356 words. his friend bob reads a book with one-and-a-half times as many words. which expression represents the number of words bob reads?

In a singing competition, there are 150 participants. at the end of each round, 40% of the participants are eliminated. how many participants are left after n rounds?