An earthquake has a period of 
second and an amplitude of 
. Find its measure on the Richter scale. Round your answer to one decimal place.
?
A. 12.4
B. 4.7
C. 5.4
D. 10.8
E. 50.0
Answer: C
Mathematics
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Sketch the surface z = f(x,y).f(x, y) = 
A. 
B. 
C. 
D. 
Mathematics
Graph f on the interval [-2?, 2?] using dot mode.f(t) = csc 
A. 
B. 
C. 
D. 
Mathematics
Write an equation for the piecewise function.
A. f(x) = 
B. f(x) = 
C. f(x) = 
D. f(x) = 
Mathematics
The current San Francisco cable railway is driven by two large 16-foot-diameter drive wheels, called sheaves. Because of the figure-eight system used, the cable subtends a central angle of 270° on each sheave. Find the length of cable riding on one of the drive sheaves at any given time.
?
?
??a = 16
?
A. 38.7 feet B. 35.7 feet C. 40.7 feet D. 37.7 feet E. 33.7 feet
Mathematics