anonymous
  • anonymous
5^x=81.2
Mathematics
jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
Take the natural log of both sides. Also,\[\ln m ^{n} = (n)(\ln m)\]
anonymous
  • anonymous
Use that rule for the left side of the equation and substitute5 for m and x for n.
anonymous
  • anonymous
How are you doing with this now, given the above instructional hint?

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anonymous
  • anonymous
|dw:1356562387571:dw|
anonymous
  • anonymous
|dw:1356562469028:dw|
anonymous
  • anonymous
fo the exactly value of x you will need a calculator, by the way...
anonymous
  • anonymous
Are you able to re-write the left-hand side now?
anonymous
  • anonymous
If you show your work so far, I will be able to get an idea of where you are stuck.
precal
  • precal
|dw:1356576833226:dw|

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