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4.

(1 pt)
Which property justifies this statement?

2 + (8 + 9) = (2 + 8) + 9

A.
transitive

B.
commutative

C.
distributive

D.
associative

Answer 1

it's not c

Answer 2

Okay this is not really a calculation problem.

You simply have to know the meaning of each property.

Look at this:

Commutative property: When two numbers are added, the sum is the same regardless of the order of the addends. For example 4 + 2 = 2 + 4

Associative Property: When three or more numbers are added, the sum is the same regardless of the grouping of the addends. For example (2 + 3) + 4 = 2 + (3 + 4)

Additive Identity Property: The sum of any number and zero is the original number. For example 5 + 0 = 5.

Distributive property: The sum of two numbers times a third number is equal to the sum of each addend times the third number. For example 4 * (6 + 3) = 4*6 + 4*3

Answer 3

Now what do you think it is?

Answer 4

Also this may help:

http://www.aaamath.com/pro74ax2.htm

Answer 5

b

Answer 6

nice

Answer 7

No... close..

Look at what I just posted..

The definition of each.

Try again.

Answer 8

so its b

Answer 9

wait nvm

Answer 10

Nope. Try again.

Answer 11

it's not b

Answer 12

a

Answer 13

Wait....

it is actually associative property!

D!

Because look at my example:

Associative Property: When three or more numbers are added, the sum is the same regardless of the grouping of the addends. For example (2 + 3) + 4 = 2 + (3 + 4)

Answer 14

look for the parentheses...

Answer 15

Great Job! :)

@owl29

Answer 16

Do you see how I got that? :)

Answer 17

yes