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Old Jun 5th 2015, 10:25 AM   #1
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Question pretty simple equation just blanking on the answer;

so the equation I was left with was:

50cm = 2T -(.0625T^2) ....and I am to solve for T here the answer is:



T=0 and 32, the latter being the answer I'm looking for but idk how we got there? and input would be valuable.
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Old Jun 5th 2015, 11:41 AM   #2
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As written you can't get those two answers.

Starting with:

50 = 2T-0.0625T^2

Rearrange to get:

0.0625T^2-2T+50 = 0

Then use the quadratic formula to solve for T, and it turns out to not have any real answers.

It appears that what you actually want to solve is this:

0 = 2T-0.0625T

Factor:

0 = T(2-0.0625T)

To make the right hand side equal zero either T = 0 or T = 2/0.0625 = 32.
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Old Jun 5th 2015, 07:03 PM   #3
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right

ok thank you idk what I was thinking, but yeah the quadratic equation, lol that's what I needed.
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