#2**+2 **

Yes it is rational.

This is because it can be expressed as a fraction 3.10723 is also 3 10723/100000

note: not all decimals are rational, pi is an example of an irrational decimal.

GYanggg May 14, 2018

#3**+2 **

A decimal is rational if it terminates or if it repeats indefinitely. The decimal fits the first condition and is, therefore, rational.

TheXSquaredFactor May 14, 2018