Evaluate.i19
A. -i
B. i
C. -1
D. 1
Answer: A
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Simplify.
A. 64
B. 8
C. 
D. 
The current San Francisco cable railway is driven by two large 12-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 = 12 ft
?
If the answer needs rounding round it to three significant digits.
?
__________ feet
What will be an ideal response?
Write the function in the form 
or 
. Find the period and phase shift.y = 5 sin (?x - 9)
A. y = 5 sin
period = ?; phase shift = 9
B. y = 5 sin
period = 5; phase shift = - 
C. y = 5 sin
period = 2; phase shift = 
D. y = 5 sin
period = 2; phase shift = 9
Write the augmented matrix for the system of equations.
A. 
B. 
C. 
D. 