Find the GCF of 12, 16, and 20

4

Step-by-step explanation:

The greatest common factor is the largest number that is a shared factor of all 3 numbers (the greatest number they can all divide into). To find the GCF, we can list all the factors of the 3 numbers and then find the largest one that is common to all three sets.

Factors of 12 are: 1,2,3,4,6,12

Factors of 16 are: 1,2,4,8,16

Factors of 20 are: 1,2,4,5,10,20

We can see that 1,2 and 4 are the numbers common to all three sets but 4 is the largest so 4 is our greatest common factor.

Hope this helped!

4

Step-by-step explanation:

4 is the GCF od 12, 16 and 20

pay attention in your classes and concentrate the best thing you can do to raise your test scores is to pay attention when you're supposed to be learning the material: in class!

take good notes.

do your homework.

use mnemonics and other tricks.

do practice tests.

note: the best i know.

step-by-step explanation:

given perimeter: 28cm

length: 9cm

atp,

2(l+w)=p of the reactangle

2(9+x)=28

18+2x=28

2x=28-18

x=10/2

x=5

therefore width is 5 cm