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Semmy [17]
3 years ago
10

Which equations support the fact that rational numbers are closed under subtraction? Select each correct answer

Mathematics
1 answer:
noname [10]3 years ago
8 0

The rationals being closed under subtraction means that if we start with two rational numbers and subtract them, we get another rational number.  Choice c subtracts two rational numbers but gets the wrong answer, so isn't support for anything.  Choice b is rational too because the square root of 4 is 2.

Answer: b

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