Answer:
5.1 can be written as 51/10 (the quotient of the integers 51 and 10. So it is a rational number
Explanation:
Recall that a rational number is a number that can be written as the quotient of two integer numbers.
In particular the number 5.1 can be written as 51/10 (the quotient of the integers 51 and 10. So it is a rational number.