Answer:
2.83 s
Step-by-step explanation:
We are given that

When a rock reached the ground then h(t)=0


Using quadratic formula





Time cannot be negative .Therefore, negative value of t can not be possible.
Hence, the rock takes 2.83 sec to reach the ground.
Answer:hope I ain’t latee
Step-by-step explanation:
<span>1/7(x) +27/7
= 1/7 (x + 27)
hope it helps</span>