SOLUTION: Exactly, how many solutions does -0.2x²+12x+11 have? This question does not come from a textbook. It is from a word problem sheet given at Axia College.

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Question 211118: Exactly, how many solutions does -0.2x²+12x+11 have?
This question does not come from a textbook. It is from a word problem sheet given at Axia College.
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
-0.2x²+12x+11
Using the quadratic equation: x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+:
x=(-12+-sqrt[12^2-4*-.2*11])/2*-.2
x=(-12+-sqrt[144+8.8])/-.4
x=(-12+-sqrt152.8)/-.4
x=(-12+-12.36)/-.4
x=(-12+12.36)/-.4
x=-.36/.4
x=-.9 ans.
x=(-12-12.36)/-.4
x=(24.36)/-.4
x=60.9 ans.