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-4.9t^2+46t+0.5=240
We move all terms to the left:
-4.9t^2+46t+0.5-(240)=0
We add all the numbers together, and all the variables
-4.9t^2+46t-239.5=0
a = -4.9; b = 46; c = -239.5;
Δ = b2-4ac
Δ = 462-4·(-4.9)·(-239.5)
Δ = -2578.2
Delta is less than zero, so there is no solution for the equation
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