Answer:
t = 21
Step-by-step explanation:
The ball strikes the groujd when h = 0.

Since time must be positive, t = 21.
One third is left, i think. Sorry, I might be off.
A and d
hope this helps you
I'm hoping it's 22.627416998
16/20
?/200
If 20*10=200 then do 16*10
160 houses. I don’t know what the proportion stuff would be