Find the sum of the infinite geometric series, if it exists.
A. -1
B. 12
C. 3
D. Does not exist
Answer: D
Mathematics
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Solve the inequality, then graph the solution.6 < 3z ? 18 
A. (2, 6]
B. [2, 6]
C. (2, 6)
D. [2, 6)
Mathematics
Use implicit differentiation to find the specified derivative at the given point.Find 
at the point (1, 2, e5) for ln(xz)y + 3y3 = 0.
A. 
B. - 
C. 
D. - 
Mathematics
Factor the polynomial.15z4 - 4z2 - 4
A. (3z2 + 2)(5z2 - 2) B. (3z4 + 2)(5z - 2) C. (5z4 + 2)(3z - 2) D. (5z2 + 2)(3z2 - 2)
Mathematics
Find the mass of the surface S having the given mass density. S is part of the plane x = 5y + 9z = 45 in the first octant; the density at a point P on S is equal to the square of the distance between P and the xy-plane.
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Mathematics