30=4.9*t^2

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Solution for 30=4.9*t^2 equation:


Simplifying
30 = 4.9t2

Solving
30 = 4.9t2

Solving for variable 't'.

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

Add '-4.9t2' to each side of the equation.
30 + -4.9t2 = 4.9t2 + -4.9t2

Combine like terms: 4.9t2 + -4.9t2 = 0.0
30 + -4.9t2 = 0.0

Add '-30' to each side of the equation.
30 + -30 + -4.9t2 = 0.0 + -30

Combine like terms: 30 + -30 = 0
0 + -4.9t2 = 0.0 + -30
-4.9t2 = 0.0 + -30

Combine like terms: 0.0 + -30 = -30
-4.9t2 = -30

Divide each side by '-4.9'.
t2 = 6.12244898

Simplifying
t2 = 6.12244898

Take the square root of each side:
t = {-2.474358297, 2.474358297}

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