0=-4.9t^2+15t-40

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Solution for 0=-4.9t^2+15t-40 equation: 



0=-4.9t^2+15t-40

We move all terms to the left:

0-(-4.9t^2+15t-40)=0

We add all the numbers together, and all the variables

-(-4.9t^2+15t-40)=0

We get rid of parentheses

4.9t^2-15t+40=0

a = 4.9; b = -15; c = +40;
Δ = b2-4ac
Δ = -152-4·4.9·40
Δ = -559
Delta is less than zero, so there is no solution for the equation

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