Evaluate.42 - 53

A. 141
B. -227
C. -7
D. -109


Answer: D

Mathematics

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Write the following as a sum using powers of 10 to show place value.0.027

A. 0 ? 100 + 0 ? 10-1 + 2 ? 10-2 + 7 ? 10-3 B. 0 ? 100 + 0 ? 101 + 2 ? 102 + 7 ? 103 C. 0 ? 101 + 0 ? 102 + 2 ? 103 + 7 ? 104 D. 0 ? 100 + 2 ? 10-1 + 7 ? 10-2

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Solve the system of equations.

A. {(3, -4, 4)} B. {(-4, 3, 4)} C. {(4, 3, -4)} D. {(-4, 4, 3)}

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Tell whether or not the rational expressions are equivalent.

A. Yes B. No

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Use a graphing calculator to solve the system of equations. Round your solutions to one decimal place.1.6x + 1.6y - 5.0z = 4.13.4x - 6.7y + 1.3z = -3.54.1x + 3.0y + 5.1z = 11.7

A. (1.6, 1.4, 0.2) B. (3.3, 2.8, 0.3) C. (6.6, 5.6, 0.6) D. (0.8, 0.7, 0.1)

Mathematics