For question 11, you essentially need to find when h(t) = 0, since that is when the height of the ball reaches 0 (ie touches the ground).
For question 12, it is asking for a maximum height, so you need to find when dh/dt = 0 and taking the second derivative to prove that there is maximum at t. That will find you the time at which the ball will hit a maximum height.
Rinse and repeat question 12 for question 13
Answer: It is A
Step-by-step explanation: Just did it on edg2020
Answer:
2y+1+9x is written as a product of three factors
Answer:
43
Step-by-step explanation:
90-47=43