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notka56 [123]
4 years ago
13

!PLEASE HELP! WILL GIVE BRAINLIEST!!

Mathematics
1 answer:
Lunna [17]4 years ago
6 0
Answer: 7.0s

10=20t-1/2(9.8)t^2 multiply every term by 2 and move all terms to one side

t^2-40t+20=0 solve for t using quadratic formula and double answer for total flight time.

t=3.498*2=7.0s

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