Multiply and simplify. Assume that all variables represent non-negative numbers.2 ( -  )

A. 2x - 2x3
B. 2x - 2x3
C. 4x - 2x3
D. 4x - 2x9

Answer: B

Mathematics

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Identify a pattern in the list of numbers. Then use this pattern to find the next number.3, 8, 13, 18, 23, ___

A. 28 B. 26 C. 33 D. 27

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In the indicated voting system, the weights represent, in order, voters A, B, C, and so on. Write out all of the winning coalitions.[12 : 1, 3, 5, 7]

A. {A, C, D}, {B, C, D}, {C, D} B. {A, B, C, D}, {A, C, D}, {B, C, D} C. {A, B, C, D}, {A, B, D}, {A, C, D}, {B, C, D}, {C, D} D. {A, B, C, D}, {A, C, D}, {B, C, D}, {C, D}

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Mathematics

Find the center, foci, and asymptotes of the hyperbola.x2 -  = 1

A. C: (0, 0); F: (4, 0), (-4, 0); A: y = x, y = - x
B. C: (0, 0); F: (, 0), (-, 0); A: y = 4x, y = -4x
C. C: (0, 0); F: (, 0), (-, 0); A: y = x, y = - x
D. C: (4, 0); F: (, 0), (-, 0); A: y = x, y = - x

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Mathematics

Find the root. If the root is not a real number, so state.

A. -4 B. 8 C. 4 D. not a real number

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Mathematics