50=.81t^2

Solution for 50=.81t^2 equation:

Simplifying
50 = 0.81t2

Solving
50 = 0.81t2

Solving for variable 't'.

Move all terms containing t to the left, all other terms to the right.

Add '-0.81t2' to each side of the equation.
50 + -0.81t2 = 0.81t2 + -0.81t2

Combine like terms: 0.81t2 + -0.81t2 = 0.00
50 + -0.81t2 = 0.00

Add '-50' to each side of the equation.
50 + -50 + -0.81t2 = 0.00 + -50

Combine like terms: 50 + -50 = 0
0 + -0.81t2 = 0.00 + -50
-0.81t2 = 0.00 + -50

Combine like terms: 0.00 + -50 = -50
-0.81t2 = -50

Divide each side by '-0.81'.
t2 = 61.72839506

Simplifying
t2 = 61.72839506

Take the square root of each side:
t = {-7.856742013, 7.856742013}