Question 31
IndicesIf 92x = (1/3)(27x), find x.
- A.2
- B.1
- C.−1
- D.−2
Show the answer and explanation
Answer: C (−1)
Explanation
Powers of 3: 34x = 3−1 × 33x = 33x − 1, so 4x = 3x − 1 and x = −1.
If 92x = (1/3)(27x), find x.
Answer: C (−1)
Powers of 3: 34x = 3−1 × 33x = 33x − 1, so 4x = 3x − 1 and x = −1.