Solve the problem.The Richter scale magnitude R of an earthquake is based on the features of the associated seismic wave and is measured by R = log (a/T) + B, where a is the amplitude in ?m (micrometers), T is the period in seconds, and B accounts for the weakening of the seismic wave due to the distance from the epicenter. Compute the earthquake magnitude R when a = 320, T = 5, and B = 3.5. (Round to the nearest ten-thousandth.)
A. 1.8062
B. 8.8062
C. 1.6938
D. 5.3062
Answer: D
Mathematics
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Calculate the requested distance.the distance from the point S(8, 7, 7) to the line x = -10 + 3t, y = -4 + 12t, 
A. 
B. 
C. 
D. 
Mathematics
Provide an appropriate response.Choose the example that correctly shows that the stated case can occur. The sum of two irrational numbers may be a rational number.
A. 
+ 
= 2
B. 
+ 
= 31
C. 
+ (-
) = 0
D. 
+ (-
) = 1
Mathematics
Find the derivative of the function.f(x) = 
A. f'(x) = 
B. f'(x) = 
C. f'(x) = 
D. f'(x) = 
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Graph.y = -4x2 + 2x - 9
A. 
B. 
C. 
D. 
Mathematics