Simplify.
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Find the volume of the solid generated by revolving the region about the y-axis.The region enclosed by x = 2tan 
, x = 0, y = - 
A. 6? - 
?2
B. 12 - 3?
C. 3? + 3?2
D. 12? - 3?2
Mathematics
Solve. Graph the solution on a number line, and express it in interval notation.x - 
> - 
A. x > - 
, 
B. x > 
, 
C. x > - 
, 
D. x < - 
, 
Mathematics
Soft drinks have carbonic acid and a hydrogen ion concentration of 0.001. What is the pH of a soft drink?
A. 3.0 B. 1.00 C. 0.001 D. 7.0
Mathematics
Solve the system of equations by elimination, if a solution exists.
A. No solution B. x = 0, y = 0 C. x = 30, y = -15 D. x = -30, y = 15
Mathematics