2.83 if rounded. 2.82842712475 would be the actual.
Hope this helped!
Answer:
3.15 seconds is the answer.
<u>Explanation</u>
when the ball touches the ground, h =0
hence,
0=255-21t-16t²
16t²+21t-225=0
here a=16 ,b=21, c= -225

time cannot be negative, hence t = -4.46 can be avoided
The ball takes 3.15 seconds to hit the ground.
Answer:
she can type 68 words every minute.
Step-by-step explanation:
In a minute there is 60 seconds so in 15 seconds she can type 17 words you
will do 17x4.
Answer:
The answer is 6765665
Step-by-step explanation:
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