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OpenStudy (tropical):
3^-9 ÷ 3^-12 = ? Help?
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OpenStudy (kittiwitti1):
\[3^{-9}+3^{-12}=\frac{1}{3^9}+\frac{1}{3^{12}}\]
OpenStudy (tropical):
Thank you
OpenStudy (sshayer):
\[3^{-9}\div 3^{-12}=\frac{ 3^{-9} }{ 3^{-12} }=3^{-9}*3^{12}=3^{-9+12}=3^3=27\]
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