5^-8 x 5^4 what is the answer to this equation?

School has 204 sixth grade students. if the sixth grade is 30% of the total school, how many students are in the middle school?

Collin did the work to see if 10 is a solution to the equation r/4=2.4

What is the distance between a and b? round your answer to the nearest tenth. a coordinate plane is shown. point a is located at negative 1, 5, and point b is located at 4, 1. a line segment connects the two points.