anonymous
  • anonymous
Help w/ expo equations
Mathematics
jamiebookeater
  • jamiebookeater
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At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

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Theloshua
  • Theloshua
no, incorrect
anonymous
  • anonymous
okay, but just so you know, that's the equation I have to use, so that part can't be wrong. I guess my answer is the wrong part.
Theloshua
  • Theloshua
because you divided on both sides, which you cant do, because the x isnt a multiplication value, its a squared value

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Theloshua
  • Theloshua
the equation is right, you just used it incorrectly
anonymous
  • anonymous
okay. On my paper there is no ^ to indicate anything it's just written as I wrote it.
anonymous
  • anonymous
so maybe that's where I got confused.
Theloshua
  • Theloshua
|dw:1440374565771:dw|
Theloshua
  • Theloshua
is that what the equation looks like?
Theloshua
  • Theloshua
okay, i believe your first step was to divide the 20000 on both sides, correct?
anonymous
  • anonymous
yeah I think so
anonymous
  • anonymous
I'm thinking my answer is 4 years now.
Theloshua
  • Theloshua
okay, thats correct i believe
Theloshua
  • Theloshua
can you please tell me what you did to solve just to make sure?
anonymous
  • anonymous
Okay on the next page, it says that it the answer to it was 4 years. So I did it right the 2nd time.
anonymous
  • anonymous
Thanks for helping me a bit. :) Much appreciated. I almost put down the wrong answer.
Theloshua
  • Theloshua
okay, no probs :D
anonymous
  • anonymous
Refer to the attachment from Mathematica 9.
1 Attachment
anonymous
  • anonymous
this question is close, when I clicked close, it didn't do it apparently so yeah.
anonymous
  • anonymous
\[10,000 = 20,000 (0.85)^x\] \[\frac{1}{2}=.85^x\] is a start
anonymous
  • anonymous
weird internet connection or something
anonymous
  • anonymous
solve via \[x=\frac{\ln(.5)}{\ln(.85)}\] and a calculator

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