To simplify the expression \( 59 \cdot 5^{-13} \) using properties of exponents, we can apply the properties as follows:
First, we can express \( 5^9 \) as \( \frac{5^9}{5^{13}} \) using the property that \( a^m \cdot a^n = a^{m+n} \):
\[ 59 \cdot 5^{-13} = \frac{5^9}{1} \cdot \frac{1}{5^{13}} = \frac{5^9}{5^{13}} \]
Now, we can use the property \( \frac{a^m}{a^n} = a^{m-n} \):
\[ \frac{5^9}{5^{13}} = 5^{9-13} = 5^{-4} \]
Since we want an equivalent expression using only positive exponents, we can rewrite \( 5^{-4} \) as:
\[ 5^{-4} = \frac{1}{5^4} \]
Now let's find which of the provided responses matches \( \frac{1}{5^4} \):
- \( 595 - 13 \)
- \( \frac{5^9}{5^{-13}} \)
- \( \frac{1}{5^4} \)
- \( \frac{1}{5^{22}} \)
- \( 5^4 \)
The correct equivalent expression is:
\(\frac{1}{5^4}\)
Thus, the answer is:
\(\frac{1}{5^4}\)