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OpenStudy (anonymous):
solve: 1/81=b^-4 Can you please show me the steps to take? Thanks
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OpenStudy (anonymous):
you could start with \[81=b^4\] then \[b=\sqrt[4]{81}\]
OpenStudy (anonymous):
I'm sorry i don't understand.
OpenStudy (anonymous):
@satellite73
OpenStudy (anonymous):
\[\frac{ 1 }{ 81 }=b ^{-4},\frac{ 1 }{ 3^4 }=b ^{-4},3^{-4}=b ^{-4},b=?\]
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