briseno6488 briseno6488
  • 11-01-2018
  • Mathematics
contestada

Evaluate the logarithm. log base nine of quantity one divided by eighty one.

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W0lf93
W0lf93 W0lf93
  • 24-01-2018
A logarithmic expression may be rewritten as an exponential expression: nine raised to the x-power equals one divided by eighty one: 9^x = 1/81. 1/18 is equal to 1/9^2, which is equal to 9^(-2). Now since nine raised to the x-power is equal to nine raised to the negative two power, x must be equal to negative two.
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