Question

question determine if √81 is rational or irrational and give a reason for your answer. answer attempt 1 out of 5 the number √81 is rational irrational because

Explanation:

Step1: Calculate the square - root value

$\sqrt{81}=9$ since $9\times9 = 81$.

Step2: Recall the definition of rational numbers

A rational number is a number that can be written as $\frac{p}{q}$ where $p$ and $q$ are integers and $q
eq0$. The number 9 can be written as $\frac{9}{1}$, where $p = 9$ and $q = 1$.

Answer:

rational because $\sqrt{81}=9$ and 9 can be written as $\frac{9}{1}$, which is in the form of $\frac{p}{q}$ ($p,q\in\mathbb{Z},q
eq0$)