Which mathematical property is demonstrated? 5 • 7 • 4 = 5 • 4 • 7 a. commutative property of addition b. commutative property of multiplication c. associative property of addition d. associative property of multiplication

Step-by-step explanation:

The operation 5 • 7 • 4 = 5 • 4 • 7 is demonstrating the commutative property of multiplication, because factor 7 and 4 are being commutate, that is, changed their position, to prove that no matter the order, it will result the same quantity. Also, it's property of multiplication and not addition, because there are factor that are being multiplied.

The next of the demonstration should be:

5 • 7 • 4 = 5 • 4 • 7

140 = 140.

Therefore, option B is the right answer.

21.4 i did it already for s1

step-by-step explanation:

1,150 give brainliest

step-by-step explanation

2r= 2300

r =1150