Determine the quadrant in which an angle, ?, lies if 
.
A. 4th quadrant
B. 2nd quadrant
C. 1st quadrant
D. 3rd quadrant
Answer: D
Mathematics
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Write an equivalent double integral with the order of integration reversed.
A. 
B. 
C. 
D. 
Mathematics
Solve the inequality. Express your answer using interval notation.|x| < -9
A. {-9} B. no solution C. (-?, ?) D. (-9, 9)
Mathematics
Solve the following system by any appropriate method. If there is no real number solution, so state.3x2 - y2 = 14x2 + 2y2 = 14
A. (
, 4), (
, -4), (-
, 4), (-
, -4)
B. (
, 2), (
, -2), (-
, 2), (-
, -2)
C. (
, 2), (
, -2), (-
, 2), (-
, -2)
D. no real solution
Mathematics
Find the union or intersection as indicated.Find A ? B if A = {x|x < -3} and B = {x|x ? 6}
A. ? B. {x|-3 < x ? 6} C. {x|x < -3 ? x ? 6} D. {x|x > -3}
Mathematics