Question

pls solve these questions
I will definitely mark u as the brainliest

Answer 1

Log problems can be easily solved but for that you have to follow the rules of log.
1) Log (128/625)
Applying rule no. 2
= log(128) - log(625)
= log (2)^7 - log(5)^4
Applying rule no. 3
= 7log(2) - 4log(5)
= 7(0.3010) - 4(0.698)
Note down the value of log(2) & log(5) from log table
= 2.107 - 2.799
= -0.689