The toy rocket hits the ground when h(t) = 0.
So, h(t) = 0 = -9t^2 + 81.
Solving the equation,
-9t^2 = -81
Dividing by -9
t^2 = 9
Taking the square root.
t = 3
The answer is 3 seconds.
75% i would think if you subtract 25% from 100% of the class
Answer:
Step-by-step explanation:
B
<h2>ANSWER : </h2>
<h2>» 14n-6/3 </h2>
refer to the above attachment ↑
Answer:
Step-by-step explanation:
7:8 is 7/8
9:5