When the angle of elevation of the sun is 64°, a pole that is tilted at an angle of 9° directly away from the sun casts a shadow 21 feet long on level ground. approximate the length of the pole to the nearest foot?

Evaluate the expression for the given value of the variable 7a - 4a for a =8

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?

A+b= 17, ab=70, find the value of |a-b|