Find the length of the third side of the right triangle. Where appropriate, give both an exact answer and an approximation to three decimal places.
A. 
? 7.810
B. 
? 3.317
C. 
= 30.5
D. 61
Answer: A
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Find the volume of the solid generated by revolving the region about the given axis. Use the shell or washer method.The region bounded by y = 7
, y = 7, and x = 0 about the line y = 7
A. 
?
B. 
?
C. 
?
D. 
?
Find all real numbers that satisfy the equation.7 cos x + 5
= 5 cos + 4
A. x = 
+ 2n? or x = 
+ 2n?
B. x = 
+ n? or x = 
+ n?
C. x = 
+ 2n? or x = 
+ 2n?
D. x = 
+ n? or x = 
+ n?
A ship headed due east is moving through the water at a constant speed of 10 miles per hour. However, the true course of the ship is 60°. If the currents are a constant 5.0 miles per hour, what is the ground speed of the ship? ? Apply the rules regarding the use of significant digits after all computations are complete. ?
A. 9 mph or 7 mph B. 8.7 mph C. 6.7 mph D. 7.7 mph or 6.7 mph E. 7.7 mph
Perform the indicated operation. Assume that all variables are nonnegative.(3
)2
A. 36
B. 6
C. 9
D. 18