1.

If \[\mathbf{lo}{{\mathbf{g}}_{\mathbf{10}}}\mathbf{8=x,}\]then \[\mathbf{lo}{{\mathbf{g}}_{\mathbf{10}}}\left( \frac{\mathbf{1}}{\mathbf{80}} \right)\]is equal to:

A. \[-\left( 1+x \right)\]
B. \[{{\left( 1+x \right)}^{-1}}\]
C. \[\frac{a}{10}\]
D. \[\frac{1}{10a}\]
Answer» B. \[{{\left( 1+x \right)}^{-1}}\]


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