Question

I need help in number 13

Answer 1

13.

log ( 1/4) = - log ( 4 ) = - 0.602

Answer 2

`\huge\boxed{-0.602}`

Explanation:

`\displaystyle log ((1)/(4) )\\\\We \ know \ that :\\\\log ((x)/(y) ) = log x - log y\\\\Applying \ the \ above \ rule\\\\= log 1 - log 4\\\\Given \ that \ log \ 1 = 0 , log \ 4 = 0.602\\\\= 0 - 0.602\\\\= -0.602\\\\\rule[225]{225}{2}`

Hope this helped!

~AH1807