Difficulty: Easy
Correct Answer: 10
Explanation:
Introduction / Context:
Recognize perfect powers: 289 is 17 squared. Equating exponents on the same base determines x straightforwardly.
Given Data / Assumptions:
Concept / Approach:
Rewrite 289 as 17^2. Then match exponents: x/5 = 2, solve for x by multiplying both sides by 5.
Step-by-Step Solution:
17^(x/5) = 17^2 ⇒ x/5 = 2x = 2 * 5 = 10
Verification / Alternative check:
Substitute back: 17^(10/5) = 17^2 = 289, correct.
Why Other Options Are Wrong:
They result from mis-scaling the fraction or confusing 289 with another square.
Common Pitfalls:
Forgetting to multiply by 5; ensure exact base matching before equating exponents.
Final Answer:
10
Discussion & Comments