12.25=-16t^2+20t+6

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Solution for 12.25=-16t^2+20t+6 equation: 



12.25=-16t^2+20t+6

We move all terms to the left:

12.25-(-16t^2+20t+6)=0

We get rid of parentheses

16t^2-20t-6+12.25=0

We add all the numbers together, and all the variables

16t^2-20t+6.25=0

a = 16; b = -20; c = +6.25;
Δ = b2-4ac
Δ = -202-4·16·6.25
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$t=\frac{-b}{2a}=\frac{20}{32}=5/8$

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