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mafiozo [28]
3 years ago
13

An object is launched upward at 64 ft/sec from a platform that is 80 feet high. What is the objects maximum height if the equati

on of height (h) in terms of time (t) of the object is given by h(t) = -16t2 + 64t + 80?
Mathematics
1 answer:
Free_Kalibri [48]3 years ago
4 0
Max height is the vertex
convert to vertex form (y=a(x-h)^2+k) by completeing the square

h(t)=-16(t²-4t)+80
h(t)=-16(t²-4t+4-4)+80
h(t)=-16((t-2)²-4)+80
h(t)=-16(t-2)²+64+80
h(t)=-16(t-2)²+144

vertex is (2,144)
at t=2, the height is 144

max height is 144ft
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