Answer:
-3
Step-by-step explanation:
Hope this helps:)
Answer: 7&8
Step-by-step explanation:
Answer:
4
Step-by-step explanation:
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You need to solve this for h(t)=0
<span>-16t^2-30t+124=0
This has two solutions, one is negative that does not make sense as time cannot be negative.
The positive solution is t=2
So the interval where it is in the air is [0;2)
</span>
Answer:
20
Step-by-step explanation: