A bike ramp is 8 feet long and has an an end height of 3 feet, as shown below. What is the measure of angle 0

Two cyclists 84 miles apart start riding toward each other at the same. one cycles 2 times as fast as the other. if they meet 4 hours later, what is the speed (in mi/h) of the faster cyclist?

An airplane travels at an unknown elevation before it descends 3 miles to an elevation of 15 miles. find the elevation of the plane before its descen.

Two numbers have a sum of -19. one number is x. what expression represents the other number?