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Is the number $-1 + 9$ rational or irrational? $\newline$ Choices: $\newline$ (A) rational $\newline$ (B) irrational

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Classify rational and irrational numbers

Full solution

Q. Is the number

-1 + 9

rational or irrational?

\newline

Choices:

\newline

(A) rational

\newline

(B) irrational

Evaluate $-1 + 9$ : Evaluate $-1 + 9$ . $\newline$ Add $-1$ and $9$ . $\newline$ $-1 + 9 = 8$
Add $-1$ and $9$ : We found: $\newline$ $-1 + 9 = 8$ $\newline$ Identify whether $-1 + 9$ is a rational or irrational number. $\newline$ $-1 + 9 = 8$ $\newline$ $8$ is a rational number because it can be expressed as a ratio of two integers ( $8/1$ ). $\newline$ $-1 + 9$ is a rational number.

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