Help please asap
Given
m m m Find m

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?

The area of square garden is 300m squared. how long is the diagonal?

When i'm with my factor 5, my prodect is 20 .when i'm with my addend 6' my sum is 10.what number am i