One side of a triangle is 15 inches, and the area of the triangle is 90 sq. inches. find the area of a similar triangle in which the corresponding side is 9 inches.

This is about circle theorems. someone asap : (

Three friends went on a road trip from phoenix, az, to san diego, ca. mark drove 50 percent of the distance. jason drove 1/8 of the distance. andy drove the remainder of the distance. 1. andy thinks he drove 1/4 of the distance from phoenix, az, to san diego, ca. is andy correct? 2. the distance from phoenix, az, to san diego, ca, is 360 miles. how many miles did each person drive? 3. solve the problem. what is the answer in total?

What makes a trapezoid an isosceles trapezoid?