like1234
  • like1234
What property is shown? –12 + (27 + 12) = –12 + (12 + 27) A. associative property B. commutative property C. distributive property D. opposite of a sum property
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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like1234
  • like1234
Will medal!!!!!!!!!!
like1234
  • like1234
I think B
anonymous
  • anonymous
The answer would be commutative because it changes order.

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More answers

like1234
  • like1234
ok thx!
like1234
  • like1234
so is the answer for this on B Which is an example of the commutative property? A. –13 + 27 = 27 + (–13) B. –21 + (11 + 13) = (–21 + 11) + 13 C. 4(–3 + 5) = 4(–3) + 4 ∙ 5 D. –(–8 + 3) = 8 + (–3)
mathstudent55
  • mathstudent55
commutative: change of order associative: change of grouping
like1234
  • like1234
ok thx!
mathstudent55
  • mathstudent55
distributive: a(b + c) = ab + ac
anonymous
  • anonymous
Associative property keeps the order but changes the parentheses.
like1234
  • like1234
ok...................
like1234
  • like1234
so am i correct???
mathstudent55
  • mathstudent55
|dw:1443637653761:dw|
anonymous
  • anonymous
No its not B. B is associative property
like1234
  • like1234
Oh
mathstudent55
  • mathstudent55
Commutative property is a change of order. Here is the general way of stating the commutative property of addition: a + b = b + a
like1234
  • like1234
wit what problem is this for?
like1234
  • like1234
*wait
anonymous
  • anonymous
I am talking about the second problem
like1234
  • like1234
ok
mathstudent55
  • mathstudent55
For the second problem, in B., the 11 and 13 were grouped together on the left side. On the right side, the -21 and 11 are grouped together. This is a change of grouping, so B is associative, not commutative.
like1234
  • like1234
so for communicative u have 2 change the whole thing?
mathstudent55
  • mathstudent55
You need to find a statement that is an example of a + b = b + a, which is commutative.
like1234
  • like1234
OH
mathstudent55
  • mathstudent55
It is not "communicative." Communicative means you like to communicate. It is "commutative." Commutative means you change, as in change the order.
like1234
  • like1234
ok im confused for communicative u change the order the opposite
like1234
  • like1234
wit my problem is commutative property not communicative
like1234
  • like1234
*wait
mathstudent55
  • mathstudent55
Commutative: See if one of the choices shows this: (first number) + (second number) = (second number) + (first number)
like1234
  • like1234
oh i see thx
like1234
  • like1234
so A then right?
mathstudent55
  • mathstudent55
Commutative property of addition. (first number) + (second number) = (second number) + (first number) a + b = b + a Example: 3 + 5 = 5 + 3
mathstudent55
  • mathstudent55
Correct. A is the answer.
like1234
  • like1234
k
like1234
  • like1234
thx sooooo much
mathstudent55
  • mathstudent55
You're welcome.
like1234
  • like1234
What value of q makes the statement true? –(q + 14) = –3 + (–14) A. –17 B. –3 C. 3 D. 17
mathstudent55
  • mathstudent55
yw
like1234
  • like1234
i now it has 2 be 3 but im not sure if it is -3 or 3
like1234
  • like1234
@mathstudent55
like1234
  • like1234
@KAKES1967
like1234
  • like1234
I think just 3
mathstudent55
  • mathstudent55
Let's use the distributive property first on the left side. –(q + 14) = –3 + (–14) -q + (-14) = -3 + (-14)
mathstudent55
  • mathstudent55
Now you see that -q must equal -3 That means q = 3, not -3
mathstudent55
  • mathstudent55
You are correct. q = 3
anonymous
  • anonymous
Yes you are correct but let @mathstudent55 explain to you why its that
like1234
  • like1234
thx guys!
mathstudent55
  • mathstudent55
yw
like1234
  • like1234
ok last thing Use an addition property to solve for b. –12 + 16 = 16 + b A. –28 B. –12 C. 4 D. 12
like1234
  • like1234
i think B
anonymous
  • anonymous
Correct
like1234
  • like1234
thx
mathstudent55
  • mathstudent55
You want b alone on the right side. Since 16 is being added to b, you need to add something to 16 to make it zero. Additive inverses add to zero.
anonymous
  • anonymous
Its using communative property
like1234
  • like1234
Got 100% thx sooooooooo much u guys really helped
anonymous
  • anonymous
Your welcome :P
anonymous
  • anonymous
Good job
mathstudent55
  • mathstudent55
If you add -16 to 16 you get zero because -16 is the additive inverse of 16. The rule with an equation is you must add the same to both sides of the equation. Since you need to add -16 to the right side, you must add -16 to the left side too.
like1234
  • like1234
ok
mathstudent55
  • mathstudent55
|dw:1443638612995:dw|
mathstudent55
  • mathstudent55
|dw:1443638712071:dw|
like1234
  • like1234
ok thx so much
like1234
  • like1234
:)
mathstudent55
  • mathstudent55
As you can see, b = -12, as you had written. Good job!
mathstudent55
  • mathstudent55
yw

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