anonymous
  • anonymous
anyone know logs? log(d)+log(2d+1)=log(7d)
Mathematics
  • Stacey Warren - Expert brainly.com
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katieb
  • katieb
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myininaya
  • myininaya
logx+logy=log(xy) so you can use that property here
anonymous
  • anonymous
so it becomes log(d(2d+1))=log(7d) ? what then
anonymous
  • anonymous
So you are almost there. Multiply the d through the quantity (2d+1) and according to the property you can set that value equal to 7d and solve for d.

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anonymous
  • anonymous
so log2d^2+d=log7d can just become 2d^2+d=7d?
anonymous
  • anonymous
that's correct, now solve for d.
anonymous
  • anonymous
ok thanks :) I never liked logs

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