Find the set if the universal set U = {-8, -3, -1, 0, 2, 4, 5, 6, 7, 9}, A = {-8, -3, -1, 2, 5}, B = {-3, 2, 5, 7}, and C = {-1, 4, 9}.A ? C
A. {4, 6, 7, 9}
B. {-1}
C. {-8, -3, -1, 2, 4, 5, 7, 9}
D. {-3, -1, 2, 5, 7, 9}
Answer: B
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A. x = -16 B. x = 2 C. x = 4 D. x = 26
Insert the correct symbol between the pair of numbers, either < (less than) or > (greater than).0 _____ 
A. > B. <
Solve the problem.If the life, in years, of a washing machine is normally distributed with a mean of 13 years and a standard deviation of 1.6 years, what should be the guarantee period if the company wants less than 1% of the machines to fail while under warranty?
A. More than 9.272 years B. Less than 9.272 years C. Less than 16.728 years D. More than 16.728 years
Discuss the equation and graph it.r = 
A. hyperbola, directrix perpendicular to
the polar axis 
unit right of the pole
vertices (
, 0), (- 
, ?)
B. ellipse, directrix parallel to
the polar axis 
unit below the pole
vertices (
, 
), (
, 
)
C. hyperbola; directrix parallel to
the polar axis 
unit above the pole
vertices (
, 
), (- 
, 
)
D. ellipse, directrix perpendicular to
the polar axis 
unit left of the pole
vertices (
, 0), (
, ?)