3) which property is used in the following: 4 x (5 + 7) = 4 x 5 + 4x7
a. associative property
c. commutative property
b. none of the above
d. distributive property
4) which of the following is an example of commutative property of addition:
a. (8 + 6 ) + 4 = 8 + (6 +4)
c. 5 x 1 = 5
b. 2 + 8 = 8 + 2
d. 9 + 3 = 7 + 9
5) which equation shows the multiplicative identity property?
a. 4 x 1 = 4
c. 4 (5 + 1) = 20 + 4
b. 4 x 4 x 4 = 3 x 4
d. (4 + 1) + 8 = 4 + ( 1 + 8 )
6) use the distributive to simplify: 3 ( x + 3) - x + 5

3) D

4) B

5) A

6) 2 (x + 7)

Step-by-step explanation:

3)  

D. Distributive Property

The distributive property of multiplication over addition can be used when you multiply a number by a sum.

4)

B. 2 + 8 = 8 + 2

The word "commutative" comes from "commute" or "move around", so the Commutative Property is the one that refers to moving stuff around.

5)

A. 4 x 1 = 4

The "Multiplicative Identity" is 1, because multiplying a number by 1 leaves it unchanged: a × 1 = 1 × a = a.

6)

3 ( x + 3) - X + 5

3x + 9 - x + 5

2x + 14

2 (x + 7)

5104.38 inches

step-by-step explanation:

understand that i don't know the answers

will someone answer his question