How do you calculate # log_5 (1/125) #? Precalculus Properties of Logarithmic Functions Common Logs 1 Answer Shwetank Mauria Apr 14, 2016 #log_5(1/125)=-3# Explanation: As #1/125=1/5^3=5^(-3)# #log_5(1/125)=log_5(5^(-3))=-3log_5(5)=-3*1=-3# Answer link Related questions What is the common logarithm of 10? How do I find the common logarithm of a number? What is a common logarithm or common log? What are common mistakes students make with common log? How do I find the common logarithm of 589,000? How do I find the number whose common logarithm is 2.6025? What is the common logarithm of 54.29? What is the value of the common logarithm log 10,000? What is #log_10 10#? How do I work in #log_10# in Excel? See all questions in Common Logs Impact of this question 3643 views around the world You can reuse this answer Creative Commons License