What is the ratio 45: 75 simplified

For what value of x does 4x = (1/8) x + 5?

What term makes it inconsistent y=2x - 4

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?