Evaluate the expression.(-7)3

A. -343
B. 343
C. 21
D. -21


Answer: A

Mathematics

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Solve the problem.The shape and density of a thin shell are indicated below. Find the coordinates of the center of mass.Shell: portion of the sphere x2 + y2 + z2 = 1 that lies in the first octantDensity: constant

A.
B.
C.
D.

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A.
B.
C.
D.

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Find the correlation coefficient.Consider the data points with the following coordinates: 

A. -0.7749 B. -0.0810 C. 0 D. 0.7537

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