Perform the indicated operation and simplify. + 

A.
B.  
C. 6m - 7
D.  

Answer: A

Mathematics

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B.


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Solve the problem.The surface of a snow-covered mountainside can be modeled by the function f(x,y) = e-((x - 0.5)2 + (y - 0.7)2),where x and y are coordinates in the horizontal plane (xy-plane). Find a unit vector that indicates the direction an avalanche will move initially if it begins at the point . Assume that the avalanche moves along the path of steepest descent.

A. u = 
B. u = 
C. u = 
D. u = 

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Mathematics

Evaluate the improper integral.

A.
B.
C.
D.

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Mathematics

Multiply or divide the fractions. Reduce to simplest form. ? 

A.
B.
C.
D.

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Mathematics