Question: Simplify $10^0r^{-11}s \over 3^2$. Write your answer using only positive exponents.
1. **State the problem:** Simplify the expression $$\frac{10^0 r^{-11} s}{3^2}$$ and write the answer using only positive exponents.
2. **Recall important rules:**
- Any number raised to the zero power is 1, so $$10^0 = 1$$.
- Negative exponents mean the reciprocal, so $$r^{-11} = \frac{1}{r^{11}}$$.
- Powers in the denominator remain as is.
3. **Rewrite the expression using these rules:**
$$\frac{1 \cdot r^{-11} \cdot s}{3^2} = \frac{s}{3^2 r^{11}}$$
4. **Calculate $3^2$:**
$$3^2 = 9$$
5. **Final simplified expression with positive exponents:**
$$\frac{s}{9 r^{11}}$$
**Answer:** $$\frac{s}{9 r^{11}}$$