Hey i really need help with these questions! i'll give brainliest and 5 stars!

Let me help you!

Step-by-step explanation:

Identity Property of Addition:

Associative Property of Addition:

Commutative Property of Addition:

A trick for the different properties:

- Identity property always has zero in it as a factor

- Associative Property always has parenthesis

- Commutative Property is always the same factor rearranged

0 = a × 0                      > Zero property

b × c = c × b                 > Commutative Property

(a × b) × c = a × (b × c) > Associative Property

I hope this helps!

- sincerelynini

step-by-step explanation:

the answer is 13 cm