Edwin 

Answer by stanbon(75887)   (Show Source): You can put this solution on YOUR website!
 Solve log{10}(.04) when log{10}(5)=.7

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0.04 = 4/100 = 1/25 = 1/5^2 = 5^-2

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Therefore log(0.04) = log(5^(-2))

= -2log(5)

=-2*0.7

= -1.4

===========================

Cheers,

Stan H. 

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