Question 31
LogarithmsIf loga270 − loga10 + loga(1/3) = 2, what is the value of a?
- A.3
- B.4
- C.5
- D.6
Show the answer and explanation
Answer: A (3)
Explanation
Combine the logs: loga(270 ÷ 10 × 1/3) = loga9 = 2, so a2 = 9 and a = 3.
If loga270 − loga10 + loga(1/3) = 2, what is the value of a?
Answer: A (3)
Combine the logs: loga(270 ÷ 10 × 1/3) = loga9 = 2, so a2 = 9 and a = 3.