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Simplifying 130 = -16t2 + 80t + 30 Reorder the terms: 130 = 30 + 80t + -16t2 Solving 130 = 30 + 80t + -16t2 Solving for variable 't'. Combine like terms: 130 + -30 = 100 100 + -80t + 16t2 = 30 + 80t + -16t2 + -30 + -80t + 16t2 Reorder the terms: 100 + -80t + 16t2 = 30 + -30 + 80t + -80t + -16t2 + 16t2 Combine like terms: 30 + -30 = 0 100 + -80t + 16t2 = 0 + 80t + -80t + -16t2 + 16t2 100 + -80t + 16t2 = 80t + -80t + -16t2 + 16t2 Combine like terms: 80t + -80t = 0 100 + -80t + 16t2 = 0 + -16t2 + 16t2 100 + -80t + 16t2 = -16t2 + 16t2 Combine like terms: -16t2 + 16t2 = 0 100 + -80t + 16t2 = 0 Factor out the Greatest Common Factor (GCF), '4'. 4(25 + -20t + 4t2) = 0 Factor a trinomial. 4((5 + -2t)(5 + -2t)) = 0 Ignore the factor 4.Subproblem 1
Set the factor '(5 + -2t)' equal to zero and attempt to solve: Simplifying 5 + -2t = 0 Solving 5 + -2t = 0 Move all terms containing t to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -2t = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -2t = 0 + -5 -2t = 0 + -5 Combine like terms: 0 + -5 = -5 -2t = -5 Divide each side by '-2'. t = 2.5 Simplifying t = 2.5Subproblem 2
Set the factor '(5 + -2t)' equal to zero and attempt to solve: Simplifying 5 + -2t = 0 Solving 5 + -2t = 0 Move all terms containing t to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -2t = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -2t = 0 + -5 -2t = 0 + -5 Combine like terms: 0 + -5 = -5 -2t = -5 Divide each side by '-2'. t = 2.5 Simplifying t = 2.5Solution
t = {2.5, 2.5}
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