Asked by shelby
                h = -16t2 + 32t + 84.
find the maximum height
how many seconds will it take to reach the ground
            
        find the maximum height
how many seconds will it take to reach the ground
Answers
                    Answered by
            bobpursley
            
    find the zeroes first:
0=16t^2-32t-84
0=t^2-2t- 21/4
0=(t-3.5)(t+1.5) so zeroes are at 3.5, -1.5, so max occurs at mid point, t=1.0, max height= -16+32+84=100
 
    
0=16t^2-32t-84
0=t^2-2t- 21/4
0=(t-3.5)(t+1.5) so zeroes are at 3.5, -1.5, so max occurs at mid point, t=1.0, max height= -16+32+84=100
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