0=-16t^2+6,400

Solution for 0=-16t^2+6,400 equation:

0=-16t^2+6.400

We move all terms to the left:

0-(-16t^2+6.400)=0

We add all the numbers together, and all the variables

-(-16t^2+6.400)=0

We get rid of parentheses

16t^2-6.400=0

We add all the numbers together, and all the variables

16t^2-6.4=0

a = 16; b = 0; c = -6.4;
Δ = b2-4ac
Δ = 02-4·16·(-6.4)
Δ = 409.6
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$t_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$t_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$t_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-\sqrt{409.6}}{2*16}=\frac{0-\sqrt{409.6}}{32}
=-\frac{\sqrt{}}{32}
$
$t_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+\sqrt{409.6}}{2*16}=\frac{0+\sqrt{409.6}}{32}
=\frac{\sqrt{}}{32}
$