0=-16t^2+115t+7.19

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Solution for 0=-16t^2+115t+7.19 equation:


Simplifying
0 = -16t2 + 115t + 7.19

Reorder the terms:
0 = 7.19 + 115t + -16t2

Solving
0 = 7.19 + 115t + -16t2

Solving for variable 't'.

Combine like terms: 0 + -7.19 = -7.19
-7.19 + -115t + 16t2 = 7.19 + 115t + -16t2 + -7.19 + -115t + 16t2

Reorder the terms:
-7.19 + -115t + 16t2 = 7.19 + -7.19 + 115t + -115t + -16t2 + 16t2

Combine like terms: 7.19 + -7.19 = 0.00
-7.19 + -115t + 16t2 = 0.00 + 115t + -115t + -16t2 + 16t2
-7.19 + -115t + 16t2 = 115t + -115t + -16t2 + 16t2

Combine like terms: 115t + -115t = 0
-7.19 + -115t + 16t2 = 0 + -16t2 + 16t2
-7.19 + -115t + 16t2 = -16t2 + 16t2

Combine like terms: -16t2 + 16t2 = 0
-7.19 + -115t + 16t2 = 0

Begin completing the square.  Divide all terms by
16 the coefficient of the squared term: 

Divide each side by '16'.
-0.449375 + -7.1875t + t2 = 0

Move the constant term to the right:

Add '0.449375' to each side of the equation.
-0.449375 + -7.1875t + 0.449375 + t2 = 0 + 0.449375

Reorder the terms:
-0.449375 + 0.449375 + -7.1875t + t2 = 0 + 0.449375

Combine like terms: -0.449375 + 0.449375 = 0.000000
0.000000 + -7.1875t + t2 = 0 + 0.449375
-7.1875t + t2 = 0 + 0.449375

Combine like terms: 0 + 0.449375 = 0.449375
-7.1875t + t2 = 0.449375

The t term is -7.1875t.  Take half its coefficient (-3.59375).
Square it (12.91503906) and add it to both sides.

Add '12.91503906' to each side of the equation.
-7.1875t + 12.91503906 + t2 = 0.449375 + 12.91503906

Reorder the terms:
12.91503906 + -7.1875t + t2 = 0.449375 + 12.91503906

Combine like terms: 0.449375 + 12.91503906 = 13.36441406
12.91503906 + -7.1875t + t2 = 13.36441406

Factor a perfect square on the left side:
(t + -3.59375)(t + -3.59375) = 13.36441406

Calculate the square root of the right side: 3.655737143

Break this problem into two subproblems by setting 
(t + -3.59375) equal to 3.655737143 and -3.655737143.

Subproblem 1

t + -3.59375 = 3.655737143 Simplifying t + -3.59375 = 3.655737143 Reorder the terms: -3.59375 + t = 3.655737143 Solving -3.59375 + t = 3.655737143 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '3.59375' to each side of the equation. -3.59375 + 3.59375 + t = 3.655737143 + 3.59375 Combine like terms: -3.59375 + 3.59375 = 0.00000 0.00000 + t = 3.655737143 + 3.59375 t = 3.655737143 + 3.59375 Combine like terms: 3.655737143 + 3.59375 = 7.249487143 t = 7.249487143 Simplifying t = 7.249487143

Subproblem 2

t + -3.59375 = -3.655737143 Simplifying t + -3.59375 = -3.655737143 Reorder the terms: -3.59375 + t = -3.655737143 Solving -3.59375 + t = -3.655737143 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '3.59375' to each side of the equation. -3.59375 + 3.59375 + t = -3.655737143 + 3.59375 Combine like terms: -3.59375 + 3.59375 = 0.00000 0.00000 + t = -3.655737143 + 3.59375 t = -3.655737143 + 3.59375 Combine like terms: -3.655737143 + 3.59375 = -0.061987143 t = -0.061987143 Simplifying t = -0.061987143

Solution

The solution to the problem is based on the solutions from the subproblems. t = {7.249487143, -0.061987143}

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