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March 30, 2017

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A seismograph 300 km from the epicenter of an earthquake recorded a maximum amplitude of 4.9 * 10^2 ┬Ám. Find this earthquake's magnitude.

  • math - ,

    is the answer 6.7 which rounded to nearest on would be 7? Please confirm this answer for me make sure i have it right.

  • math - ,

    Yes

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