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leva [86]
2 years ago
11

A projectile is thrown upward so that its distance above the ground after t seconds is given by the function h(t) = -16t² + 704t

. After how many seconds does the projectile take to reach its maximum height? Show your work for full credit.
Mathematics
1 answer:
Inessa05 [86]2 years ago
5 0
H(t) = -16t^2 +704t = -16(t^2 -44t)
Putting in vertex form: -16(t^2 -44t +484) + 704
h(t) = -16(t-22)^2 + 704
It takes 22 seconds to reach the maximum height, which is the vertex of the parabola at (22,704)
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