Solve the problem.Use the formula R = log
, 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. If an earthquake measured 5.3 on the Richter scale, what was the intensity of the earthquake? (Round to whole number.)
A. 200
B. 158,489
C. 199,526
D. 19,953
Answer: C
Mathematics
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Solve the problem.Find the exponent that makes the equation true: 7n = 2401.
A. 4 B. 5 C. 11 D. 28
Mathematics
Find a Cartesian equation for the parametric equations.x = 
, y = 9t + 3
A. y = 9x + 3
B. y = 9
+ 3
C. y = 9x2 - 3
D. y = 9x2 + 3
Mathematics
Perform the indicated operation and simplify. 
- 
A. 
B. 
C. 
D. 
Mathematics
Evaluate the expression using order of operations.(6 + (-5))[6 + (8 + 3)]
A. 17 B. 77 C. 18 D. 14
Mathematics