State whether each number is prime or composite

Hi!

To identify whether a number is prime or composite, just list all of its factors.

Let me show you what I mean by this.

A prime number has only 2 factors: 1 and itself.

A composite number has 3 or more factors.

EXAMPLE:

PRIMES: 2, 3, 5, 7,11, 13, 17, 19...

COMPOSITES: 4, 6, 8, 10, 12, 13, 14, ...

Hope it helps you! Please mark Brainliest:)

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional