X is Normal(?1, 2.1).
Find E ( X ), Var ( X ), and SD( X ) for the given random variable
?1, 4.41, ? 2.1
Mathematics
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Use Gauss's Divergence Theorem to calculate 
.F(x, y, z) = xyi + y2j - 2yzk; S: the solid wedge cut from the first quadrant by the plane 
and the parabolic cylinder 
A. 
B. 
C. 
D. 
Mathematics
Solve using the elimination method. Use a graphing calculator to check your answer. 5x + 54 = -7y 3x - 5y = 32
A. (-1, -6) B. (-1, -7) C. (-2, -6) D. No solution
Mathematics
Identify the pair of lines as parallel, perpendicular, or intersecting.
A. Parallel B. Intersecting C. Perpendicular
Mathematics
Write the first five terms of the arithmetic sequence with the given term and common difference.a1 = - 
, d = 
A. - 
, - 1, - 
, - 2, - 
B. - 
, - 
, 0, 
, 
C. - 
, - 
, - 1,- 
,- 
D. - 
, - 
, - 1, 
, - 
Mathematics