QuestionAugust 26, 2025

Which of the following numbers is rational? sqrt (12) pi (21)/(14) sqrt (7)

Which of the following numbers is rational? sqrt (12) pi (21)/(14) sqrt (7)
Which of the following numbers is rational?
sqrt (12)
pi 
(21)/(14)
sqrt (7)

Solution
4.6(275 votes)

Answer

\frac{21}{14} Explanation 1. Identify Rational Numbers A rational number can be expressed as a fraction \frac{a}{b} where a and b are integers, and b \neq 0. 2. Analyze Each Option - \sqrt{12} is not a perfect square, hence irrational. - \pi is known to be an irrational number. - \frac{21}{14} simplifies to \frac{3}{2}, which is a fraction of integers, hence rational. - \sqrt{7} is not a perfect square, hence irrational.

Explanation

1. Identify Rational Numbers<br /> A rational number can be expressed as a fraction $\frac{a}{b}$ where $a$ and $b$ are integers, and $b \neq 0$.<br /><br />2. Analyze Each Option<br /> - $\sqrt{12}$ is not a perfect square, hence irrational.<br /> - $\pi$ is known to be an irrational number.<br /> - $\frac{21}{14}$ simplifies to $\frac{3}{2}$, which is a fraction of integers, hence rational.<br /> - $\sqrt{7}$ is not a perfect square, hence irrational.
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