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3=-16t^2+11.5t
We move all terms to the left:
3-(-16t^2+11.5t)=0
We get rid of parentheses
16t^2-11.5t+3=0
a = 16; b = -11.5; c = +3;
Δ = b2-4ac
Δ = -11.52-4·16·3
Δ = -59.75
Delta is less than zero, so there is no solution for the equation
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