7.5=-16t^2+19t+6

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Solution for 7.5=-16t^2+19t+6 equation:


Simplifying
7.5 = -16t2 + 19t + 6

Reorder the terms:
7.5 = 6 + 19t + -16t2

Solving
7.5 = 6 + 19t + -16t2

Solving for variable 't'.

Combine like terms: 7.5 + -6 = 1.5
1.5 + -19t + 16t2 = 6 + 19t + -16t2 + -6 + -19t + 16t2

Reorder the terms:
1.5 + -19t + 16t2 = 6 + -6 + 19t + -19t + -16t2 + 16t2

Combine like terms: 6 + -6 = 0
1.5 + -19t + 16t2 = 0 + 19t + -19t + -16t2 + 16t2
1.5 + -19t + 16t2 = 19t + -19t + -16t2 + 16t2

Combine like terms: 19t + -19t = 0
1.5 + -19t + 16t2 = 0 + -16t2 + 16t2
1.5 + -19t + 16t2 = -16t2 + 16t2

Combine like terms: -16t2 + 16t2 = 0
1.5 + -19t + 16t2 = 0

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

Divide each side by '16'.
0.09375 + -1.1875t + t2 = 0

Move the constant term to the right:

Add '-0.09375' to each side of the equation.
0.09375 + -1.1875t + -0.09375 + t2 = 0 + -0.09375

Reorder the terms:
0.09375 + -0.09375 + -1.1875t + t2 = 0 + -0.09375

Combine like terms: 0.09375 + -0.09375 = 0.00000
0.00000 + -1.1875t + t2 = 0 + -0.09375
-1.1875t + t2 = 0 + -0.09375

Combine like terms: 0 + -0.09375 = -0.09375
-1.1875t + t2 = -0.09375

The t term is -1.1875t.  Take half its coefficient (-0.59375).
Square it (0.3525390625) and add it to both sides.

Add '0.3525390625' to each side of the equation.
-1.1875t + 0.3525390625 + t2 = -0.09375 + 0.3525390625

Reorder the terms:
0.3525390625 + -1.1875t + t2 = -0.09375 + 0.3525390625

Combine like terms: -0.09375 + 0.3525390625 = 0.2587890625
0.3525390625 + -1.1875t + t2 = 0.2587890625

Factor a perfect square on the left side:
(t + -0.59375)(t + -0.59375) = 0.2587890625

Calculate the square root of the right side: 0.508713144

Break this problem into two subproblems by setting 
(t + -0.59375) equal to 0.508713144 and -0.508713144.

Subproblem 1

t + -0.59375 = 0.508713144 Simplifying t + -0.59375 = 0.508713144 Reorder the terms: -0.59375 + t = 0.508713144 Solving -0.59375 + t = 0.508713144 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.59375' to each side of the equation. -0.59375 + 0.59375 + t = 0.508713144 + 0.59375 Combine like terms: -0.59375 + 0.59375 = 0.00000 0.00000 + t = 0.508713144 + 0.59375 t = 0.508713144 + 0.59375 Combine like terms: 0.508713144 + 0.59375 = 1.102463144 t = 1.102463144 Simplifying t = 1.102463144

Subproblem 2

t + -0.59375 = -0.508713144 Simplifying t + -0.59375 = -0.508713144 Reorder the terms: -0.59375 + t = -0.508713144 Solving -0.59375 + t = -0.508713144 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.59375' to each side of the equation. -0.59375 + 0.59375 + t = -0.508713144 + 0.59375 Combine like terms: -0.59375 + 0.59375 = 0.00000 0.00000 + t = -0.508713144 + 0.59375 t = -0.508713144 + 0.59375 Combine like terms: -0.508713144 + 0.59375 = 0.085036856 t = 0.085036856 Simplifying t = 0.085036856

Solution

The solution to the problem is based on the solutions from the subproblems. t = {1.102463144, 0.085036856}

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