Question: Simplify $\frac{p^{-8}}{t^{-2}q^{-9}}$. Write your answer using only positive exponents.
1. **State the problem:** Simplify the expression $$\frac{p^{-8}}{t^{-2}q^{-9}}$$ and write the answer using only positive exponents.
2. **Recall the exponent rules:**
- When dividing powers with the same base, subtract exponents: $$a^m / a^n = a^{m-n}$$.
- Negative exponents mean reciprocal: $$a^{-m} = \frac{1}{a^m}$$.
- To write with positive exponents, move factors with negative exponents from numerator to denominator or vice versa.
3. **Rewrite the expression:**
$$\frac{p^{-8}}{t^{-2}q^{-9}} = p^{-8} \times t^{2} \times q^{9}$$
4. **Move negative exponents to the opposite part of the fraction:**
- Since $$p^{-8}$$ is in the numerator, rewrite as $$\frac{1}{p^{8}}$$.
- Since $$t^{-2}$$ and $$q^{-9}$$ are in the denominator, rewrite as $$t^{2}$$ and $$q^{9}$$ in the numerator.
5. **Combine all positive exponents:**
$$\frac{t^{2} q^{9}}{p^{8}}$$
**Final answer:**
$$\boxed{\frac{t^{2} q^{9}}{p^{8}}}$$