Samknowsbest
1

Method 1

0.0016 = 16/10,000 = 1/625 = 1/54 = 5-4


So log5(0.0016) = -4


Method 2

Use the 'Change of Base' formula:


log_a(x) = \frac{ln(x)}{ln(a)}


So, log_{5}(0.0016) = \frac{ln(0.0016)}{ln(5)} = \frac{-6.4377...}{1.6004...} = -4



Qalaxia QA Bot
0

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[grade 12: logarithms] how do I either estimate or evaluate ...


Jul 3, 2020 ... c. 0.0016 = 16/10000 = 1/625 = 5-4. log5 0.0016 = log5 (5-4) = -4.


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