A stuntman jumping off a 20-m-high building is modeled by the equation h = 20 – 5t2, where t is the time in seconds. A high-speed camera is ready to film him between 15 m and 10 m above the ground. For which interval of time should the camera film him?
Answer:

Step-by-step explanation:
Given:
A stuntman jumping off a 20-m-high building is modeled by the equation
-----------(1)
A high-speed camera is ready to making film between 15 m and 10 m above the ground
when the stuntman is 15m above the ground.
height
Put height value in equation 1





We know that the time is always positive, therefore 
when the stuntman is 10m above the ground.
height
Put height value in equation 1







Therefore ,time interval of camera film him is 
Answer:
it should be 12
i think :)
i hope im correct
Step-by-step explanation:
There would be 1 real zero and two complex zeros
47 is equal to .47 and 1000 is equal to 1
have a great day ♡
Answer:
The area of this triangle is.. 
Step-by-step explanation:
6 x 10 divided by 2 = 30