1. **State the problem:** Solve the equation $$10^{8t} \times 10^{2 - t} = 11$$ for $t$.
2. **Use the property of exponents:** When multiplying powers with the same base, add the exponents:
$$10^{8t} \times 10^{2 - t} = 10^{8t + 2 - t} = 10^{7t + 2}$$
3. **Rewrite the equation:**
$$10^{7t + 2} = 11$$
4. **Take the logarithm base 10 of both sides:**
$$\log_{10}(10^{7t + 2}) = \log_{10}(11)$$
5. **Use the logarithm power rule:**
$$7t + 2 = \log_{10}(11)$$
6. **Isolate $t$:**
$$7t = \log_{10}(11) - 2$$
7. **Divide both sides by 7:**
$$t = \frac{\log_{10}(11) - 2}{7}$$
8. **Calculate the numerical value:**
$$\log_{10}(11) \approx 1.0414$$
$$t = \frac{1.0414 - 2}{7} = \frac{-0.9586}{7} \approx -0.1369$$
**Final answer:**
$$t \approx -0.1369$$
Exponential Equation 7Af273
Step-by-step solutions with LaTeX - clean, fast, and student-friendly.