65=-4.9t^2+30t

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Solution for 65=-4.9t^2+30t equation: 



65=-4.9t^2+30t

We move all terms to the left:

65-(-4.9t^2+30t)=0

We get rid of parentheses

4.9t^2-30t+65=0

a = 4.9; b = -30; c = +65;
Δ = b2-4ac
Δ = -302-4·4.9·65
Δ = -374
Delta is less than zero, so there is no solution for the equation

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