Question

is 5.172 a rational number? yes no submit

Explanation:

Step1: Recall rational number definition

A rational number is a number that can be expressed as $\frac{p}{q}$, where $p$ and $q$ are integers and $q
eq0$. Decimals that terminate or repeat are rational.

Step2: Analyze 5.172

5.172 is a terminating decimal (it stops after the thousandths place). We can write it as $\frac{5172}{1000}$, where $5172$ and $1000$ are integers, and $1000
eq0$. So it fits the definition of a rational number.

Answer:

yes