Use the unit circle and any appropriate relationship among the trigonometric functions to find the value.
sin 
A. -1
B. 
C. - 
D. - 
Answer: D
Mathematics
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Evaluate the double integral over the given region.
R = {(x, y): 0 ? x ? 1, 0 ? y ? 1}
A. 
B. 
C. 
D. 
Mathematics
Perform the indicated operation(s). Simplify if possible.
- 
A. 
B. 
C. 
D. 
Mathematics
Solve the formula for the specified variable.
+ 
= 
for c
A. c = 
B. c = ab(a + b)
C. c = 
D. c = a + b
Mathematics
Solve the problem.The cost C of an international call is given by the formula 
where 
Find the duration of a call that costs $5.57 by replacing C in the formula with 5.57 and solving the resulting equation.
A. 23 minutes B. 7 minutes C. 16 minutes D. 30 minutes
Mathematics