Rewrite each logarithm as a quotient of common logarithms. then, evaluate to the nearest hundredth.

log(9)12

Step-by-step explanation:

 Given expression   ,

we have to rewrite the  logarithm as a quotient of common logarithms and then evaluate

Using property of logarithm ,

Given expression

becomes,

(approx))

(approx)

Substitute , we get,

Thus,  

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)