How much more intense is an earthquake with a magnitude of 8.5 on the Richter scale than one with a magnitude of 5.6?
(a) 1.9 times
(b) 79 times
(c) 2.9 times
(d) 794 times
(e) none of these
(d) 794 times
Mathematics
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Express the number in terms of j.
A. -2j
B. 2j
C. 2
D. -2
Mathematics
Multiply. 
A. 0 B. 1 C. 12 D. 6
Mathematics
Find the expected value of the random variable in the experiment.Three coins are tossed, and the number of tails is noted.
A. 1 B. 1.75 C. 2 D. 1.5
Mathematics
Solve the problem.A continuous random variable X has PDF f(x) = 
x2(8 - x), 
Find E(X3).
A. 
B. 
C. 
D. 
Mathematics