Solve the equation.8x - 4x + 3x = 28

A.
B.
C. 21
D. 4

Answer: D

Mathematics

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Solve the system of equations graphically using a graphing calculator. Find all values to the nearest tenth.y = 2x + 4xy = -2

A. x = 0.4, y = 4.8; x = -2.4, y = -0.8 B. x = 0.4, y = 4.8 C. x = -1.0, y = 2.0 D. No solution

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Mathematics

Sketch the graph of the polynomial function.f(x) = 3x4 - x3 + 5x2 + 4x - 5

A.

B.

C.

D.

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Mathematics

Find the second-order partial derivative.Find fxx when f(x,y) = 8x3y - 7y2 + 2x.

A. -28 B. -14 C. 24x2 D. 48xy

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Mathematics

Determine c, if possible, so that the formula describes a discrete probability distribution. ?

A. 2
B.
C. 194
D. 33
E. not possible

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Mathematics