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posted by Denny Wednesday, June 8, 2011 at 5:02pm.

Log base 10 of 9 = 0.95. Log base 10 of 2 = 0.30. Find log base 10 of (20/9)

log(20/9)=log20-log9=log10+log2-log9= =1+0.30-0.95

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