Select the statement that correctly describes the solution to this system of equations.

The multiplication property of zero states that the product of any number and 0 is 0. what must be true about either a or b to make ab=0

Hi my sisters and brothers can tell me the answer because i don’t understand the question

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?