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Is the number 9+(−9)9 + (-9) rational or irrational?\newlineChoices:\newline(A) rational\newline(B) irrational

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Full solution

Q. Is the number 9+(−9)9 + (-9) rational or irrational?\newlineChoices:\newline(A) rational\newline(B) irrational
  1. Evaluate 9+−99 + -9: Evaluate 9+−99 + -9.\newlineAdd 99 and −9-9.\newline9+−9=09 + -9 = 0
  2. Add 99 and −9-9: We found:\newline9+(−9)=09 + (-9) = 0\newlineIdentify whether 9+(−9)9 + (-9) is a rational or irrational number.\newline00 is a rational number because it can be expressed as a ratio of two integers (0/10/1).\newline9+(−9)9 + (-9) is a rational number.

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