Answer:
13 seconds.
Step-by-step explanation:
Given

Required
Determine a reasonable solution for t
To do this, we equate h to 0.
becomes

Divide through by -4.9

Reorder the expression

Split
or 
This gives:
or 
But time can't be negative, So:

Answer:
B
Step-by-step explanation:
its a graph and I agree math is dumb
Answer:
BALSS
Step-by-step explanation:
GURL Y DO YOU HAVE SO MANY MARBELS ???
Measure it hope that helps if not that's on me