The Richter scale converts seismographic readings into numbers for measuring the magnitude of an earthquake according to this function M(x) = log 
, where x0 = 10-3.What is the magnitude of an earthquake whose seismographic reading is 0.94 millimeters at a distance of 100 kilometers from its epicenter? Round the answer to four decimal places.
A. -3.0269
B. -0.0269
C. 0.9731
D. 2.9731
Answer: D
Mathematics
You might also like to view...
Solve. Round your results to four decimal places.Use the Euler method with dx = 0.5 to estimate y(3) if y' = y2/
and y(2) = -1. What is the exact value of y(3)?
A. y ? -0.8013, exact value is -0.2217 B. y ? -0.8899, exact value is -0.2025 C. y ? -0.6685, exact value is -0.2362 D. y ? -0.6242, exact value is -0.2265
Mathematics
Solve the problem.The accompanying figure shows the graph of y = -x2 shifted to a new position. Write the equation for the new graph.
A. y = -x2 - 3 B. y = -(x - 3)2 C. y = -x2 + 3 D. y = -(x + 3)2
Mathematics
Evaluate the exponential function at the specified value of x.y = 243x, x = 0.2
A. 
B. 3
C. 
D. 9
Mathematics
Simplify. Express in terms of i.
A. 3
B. -3
C. -3i
D. 3i
Mathematics