SOLUTION: 1.65=1+8t-5tē

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Question 205159: 1.65=1+8t-5tē
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
1.65=1+8t-5tē
5t^2-8t-1+1.65=0
5t^2-8t+.65=0
Using the quadratic equation:
x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+
We get:
t=(8+-sqrt[-8^2-4*5*.65])/2*5
t=(8+-sqrt[64-13])/10
t=(8+-sqrt51)/10
t=8+-7.1414)/10
t=(8+7.1414)/10
t=15.1414/10
t=1.5141 ans.
t=(8-7.1414)/10
t=.8586/10
t=.08586 ans.