Solve the problem.The Richter Scale measures the magnitude M of an earthquake. An earthquake whose seismographic reading measures x millimeters 100 kilometers from the epicenter has magnitude M given by M(x) = log 
. Give the magnitude of an earthquake that resulted in a seismographic reading of 69,003 millimeters 100 kilometers from its epicenter.
A. 1.8
B. 8.8
C. 7.8
D. 6.8
Answer: C
Mathematics
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A. 
B. 
C. 
D. 
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Make the required change in the given equation.? = -2 cos ? sin ? to Cartesian coordinates
A. x2 + y2 + z2 + 2z = 0
B. 
= -2y
C. x2 + y2 + z2 + 2x = 0
D. 
= -2x
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Find the derivative.y = 
A. 4x3 cos (x2) B. sin (x2) C. cos (x2) - 1 D. cos (x2)
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Verify the identity.sec4 x - tan4 x = sec2 x + tan2 x
What will be an ideal response?
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