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5 March, 15:11

F x + y is rational, must x and y each be rational? A) Yes; because the sum of rationals is rational. B) No; because the sum of irrationals is always irrational. C) No; because x and y could be additive inverses of each other. D) Yes; because x and y must be integers, and integers are rational.

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  1. 5 March, 15:21
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    The answer is D) Yes; because x and y must be integers, and integers are rational.
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