Final answer:
The decimal equivalent of 9/11 is 0.818181..., which is a repeating decimal. It is often written as 0.81 with a bar over '81'.
Step-by-step explanation:
The decimal equivalent of 9/11 is calculated by dividing 9 by 11. When you do the division, you'll find that the quotient is 0.818181..., with the digits '18' repeating indefinitely. Since these digits continue forever without terminating, we can say that the decimal is a repeating decimal.
To indicate this repeating pattern, you might often see it written as 0.81 with a bar over the '81' to signify that these two numbers repeat over and over again.
Learn more about Repeating Decimal