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Mathematics 15 Online
OpenStudy (anonymous):

The Richter scale is used to measure the magnitude of an earthquake. The magnitude, R, is given by the equation: R=0.65log(0.39E)+1.45, where E is the energy (measured in kilowatt-hours) released by the earthquake. Determine the amount of energy release by an earthquake of magnitude, 7.5. 1. simplify the problem so that it is written in the form b=log (subscript)a

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