900=240t-16t^2

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Solution for 900=240t-16t^2 equation:



900=240t-16t^2
We move all terms to the left:
900-(240t-16t^2)=0
We get rid of parentheses
16t^2-240t+900=0
a = 16; b = -240; c = +900;
Δ = b2-4ac
Δ = -2402-4·16·900
Δ = 0
Delta is equal to zero, so there is only one solution to the equation
Stosujemy wzór:
$t=\frac{-b}{2a}=\frac{240}{32}=7+1/2$

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