Answer:
0.163489 is a rational number
Explanation:
A rational number is a number that can be expressed as a fraction, where both the numerator and denominator are integers and the denominator is not zero.
To determine if 0.163489 is rational or irrational, we need to check if it can be expressed as a fraction.
By looking at the decimal representation, we can see that the number has a finite number of decimal places, which suggests that it can be expressed as a fraction. However, we need to confirm this.
To express 0.163489 as a fraction, we can write it as 163489/1,000,000. Both the numerator and denominator are integers, and the denominator is not zero.
Therefore, 0.163489 is a rational number