0.81t^2=90

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Solution for 0.81t^2=90 equation: 


Simplifying
0.81t2 = 90

Solving
0.81t2 = 90

Solving for variable 't'.

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

Divide each side by '0.81'.
t2 = 111.1111111

Simplifying
t2 = 111.1111111

Take the square root of each side:
t = {-10.540925533, 10.540925533}

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