2georgiarae 2georgiarae

30-06-2015
Mathematics

Answered

Write the expressions as an equivalent power with a negative exponent. 1/49 and 27/125

Verified Answer :

RedRicin RedRicin

30-06-2015

\(n^{-x}=\frac1{n^x}\)

\(\textcircled1\ \frac1{49}=\frac1{7^2}=\boxed{7^{-2}}\)

\(\textcircled2\ \frac{27}{125}=\frac{3^3}{5^3}=(\frac35)^3=\frac1{(\frac{5}{3})^3}=\boxed{\left(\frac53\right)^{-3}}\)

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