Solve the problem.Use the formula M = log (I/I0), where the magnitude of an earthquake on the Richter scale is based on I, the measurement of a seismic wave, and I0, the measurement of a seismic wave of a level zero earthquake with the same epicenter. An earthquake was recorded which was 31,623 times more powerful than a reference level zero earthquake. What is the magnitude of this earthquake? Round to the nearest tenth.
A. 4.5
B. 10.4
C. 0.5
D. 3.5
Answer: A
Mathematics
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- 
B. 2x - 9 - 
+ 
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+ 
D. 2x + 9 - 
+ 
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A. 
B. 
C. y9
D. 
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Check the subtraction. If the subtraction has not been done correctly, find the correct answer.
A. Incorrect; 630 B. Correct. C. Incorrect; 614 D. Incorrect; 624
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A. 
B. 
C. 
D. 
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