Find an equation of the tangent plane to the given surface at the specified point.
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Mathematics
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Simplify, then write in descending order.5m3 + 5m2 + 15m - 16m2 + 15m - 3m3
A. 2m3 - 11m2 + 30m B. 2m3 -11m2 - 30m C. 2m3 + 11m2 - 30m D. 2m3 + 11m2 + 30m
Mathematics
Solve the problem.The perimeter of a rectangle, P, is given by P = 2L + 2W, where L is its length and W is its width. What is the perimeter of a rectangle of length 20 ft and width 14 ft?
A. 136 ft B. 68 ft C. 54 ft D. 34 ft
Mathematics
Write a third-degree polynomial equation with real coefficients and the roots 4, i. ?
A. 
B. 
C. 
D. 
E. none of these
Mathematics
The matrix associated with the solution to a system of linear equations in x, y, and z is given. Write the solution to the system, if it exists.
A. x = 1, y = -1, z = 3 B. x = -1, y = 1, z = 3 C. x = -1, y = 3, z = 1 D. x =-3, y = 3, z = 1
Mathematics