Find the unknown value in the percent proportion  Round to the nearest tenth, if necessary.part = 4, percent = 20

A. whole = 2
B. whole = 10
C. whole = 500
D. whole = 20


Answer: D

Mathematics

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Multiply and simplify. ? 

A. 1
B.
C. -1
D. 0

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What will be an ideal response?

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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 = 16 that lies in the first octantDensity: constant

A.
B.
C.
D.

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Sketch the graph of the piecewise defined function.

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