Evaluate product of 10 with the quotient of 63 & 5

Given right triangle xyz, which correctly describes the locations of the sides in relation to

Astuntman jumping off a 20-m-high building is modeled by the equation h=20-5t^2, where t is the same in seconds. a high-speed camera is ready to film him between 15m and 10m above the ground. for which interval of time should the camera film him?

Why is studying fractions important