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 equation of height (h) in terms of time (t) of the object is given by h(t) = -16t^2 + 64t + 80?

the answer is 4.97 s.

step-by-step explanation:

since the problem does not consist of whole integers factoring is difficult and the quadratic formula would be easiest

t=(-64±(64^2+4*16.1*80)^(1/2))/-32.2

from this we get two answers

t=4.97 and -.999 s

since the other is a nonreal number the answer is 4.97

sine

step-by-step explanation: