What is the value of the expression 3–4? A. –81 B. –12 C. – D.
hint: \[\Large {3^{ - 4}} = \frac{1}{{{3^4}}} = \frac{1}{{3 \cdot 3 \cdot 3 \cdot 3}} = ...?\]
idk
@Michele_Laino nvm can i have the answer
\[\Large \begin{gathered} {3^{ - 4}} = \frac{1}{{{3^4}}} = \frac{1}{{3 \cdot 3 \cdot 3 \cdot 3}} = \frac{1}{{\left( {3 \cdot 3} \right) \cdot \left( {3 \cdot 3} \right)}} \hfill \\ \hfill \\ = \frac{1}{{9 \cdot 9}} = ...? \hfill \\ \end{gathered} \]
what is 9*9=...?
81
correct! so your answer is: \[\Large \begin{gathered} {3^{ - 4}} = \frac{1}{{{3^4}}} = \frac{1}{{3 \cdot 3 \cdot 3 \cdot 3}} = \frac{1}{{\left( {3 \cdot 3} \right) \cdot \left( {3 \cdot 3} \right)}} \hfill \\ \hfill \\ = \frac{1}{{9 \cdot 9}} = \frac{1}{{81}} \hfill \\ \end{gathered} \]
my answer is 1/8?
your answer is: \[\Large \frac{1}{{81}}\]
k thx
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