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Jazminnexoxo1093
11.11.2019 •
Mathematics
[9.06] a firecracker shoots up from a hill 150 feet high with an initial speed of 110 feet per second. using the formula h(t) = −16t2 + vt + s, approximately how long will it take the firecracker to hit the ground?
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Ответ:
0 = -16t^2 + 110t + 150
8t^2 - 55t - 75 = 0
t = 8.04 seconds.
Ответ:
25 or 26
Step-by-step explanation:
add 9 plus 16
so it is 16