Hello.
A composite number has more than 2 factors; it's divisible by 1, itself, and something else.
Let's find the composite numbers smaller than 18.
The composite numbers are
4, 6, 8, 9, 10, 12, 14, 15, 16.
I hope it helps.
Have a nice day.

13 31/40
Explanation
6 3/8+7 2/5
6+7=13
Common denominator of 8 and 5=40
Use common denominator 6 15/40+7 16/40
15+16=31
Answer:
63/9 = 7 -> Yes
-94 -> Yes
30/6 = 5 -> Yes
-16/3 ~ -5,33 -> Nope
-29,86 -> Nope
Step-by-step explanation:
Integers are whole Numbers.
For example 1,2,3,4,5...
The numbers between numbers are rational numbers.
Fir example:
1,2 ( between 1 and 2)
3,8 (between 3 and 4)
2,6 (between 2 and 3)