Answer:
See below
Step-by-step explanation:
If the denominator of a fraction has <em>only factors of 2 and 5</em>, the decimal expression <em>terminates</em>.
If the denominator contains a factor <em>other than 2 or 5,</em> then the decimal expression <em>repeats.
</em>
56/72 is a repeating decimal
72 contains a factor of 9.
12/30 is a terminating decimal.
30 contains factors of 2 and 5
15/40 is a terminating decimal.
40 contains factors of 2 and 5
12/37 is a repeating decimal.
37 does not contain factors of 2 or 5.
