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Mathematics 8 Online
OpenStudy (anonymous):

An earthquake registers a 5.6 on the Richter scale. If the reference intensity of this quake was 7.3 × 10^9, what was the intensity of the earthquake? A 2.70 × 10^2 B 3.98 × 10^5 C 1.30 × 10^9 D 1.97 × 10^12 E 2.91 × 10^15

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