Solve the problem.Find the ratio of the amplitude of an earthquake with Richter number 5 to the amplitude of an earthquake with Richter number 1.
A. 4
B. 10,000
C. 40
D. 1000
Answer: B
Mathematics
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Perform the indicated operation. Give answers in rectangular form expressing real and imaginary parts to four decimal places.(12 cis 18.5°)(5 cis 6.5°)
A. 54.3785 + 25.3571i B. -7.9411 + 54.3785i C. -0.6618 + 4.9560i D. 11.8944 - 1.5882i
Mathematics
Use power series operations to find the Taylor series at x = 0 for the given function.f(x) = x3 cos ?x
A. 
B. 
C. 
D. 
Mathematics
Simplify.63 - (30 - 6)
A. 39 B. 33 C. 24 D. 27
Mathematics
Solve.Find the sum of -69 and 71.
A. -2 B. -140 C. 140 D. 2
Mathematics