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.Find the magnitude (to one decimal place) of an earthquake whose seismographic reading is 2000 millimeters at a distance of 100 kilometers from its epicenter. Round the answer to the nearest tenth.
A. 5.9
B. 6.3
C. 6.4
D. 7.3
Answer: B
Mathematics
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Simplify.
A. 
B. 1
C. 1 - a2
D. 
Mathematics
Solve the problem.The Lucas sequence LN is given by 1, 3, 4, 7, 11, 18, 29, 47, 76, 123, . . . .Note that 
From this, we might conjecture that LN × LN+3 =
- y where y =
A. 
.
B. 182 - 112.
C. 
.
D. 
.
E. none of these
Mathematics
Statistics are useful for the electronics technician for:
a. Predicting failure rates of components b. Incoming inspection of purchased parts c. Circuit analysis d. All of the above
Mathematics
Find 
.
?
?
A. 
B. 
C. 
?
D. 
E. 
Mathematics