## anonymous 5 years ago Which of the following shows the additive inverse property? A. 8 + 0 = 8 B. 8 + 1 = 9 C. 8 + (-1) = 7 D. 8 + (-8) = 0

1. phi

the additive inverse, or opposite, of a number a is the number that, when added to a, yields zero.

2. anonymous

what $\phi$ sais

3. anonymous

Ok how did you get that (:?

4. phi

First, do you know the answer ?

5. anonymous

well im guessing a? bc of what you said..Sol idk..What exactly IS additive inverse property?

6. phi
7. phi

Additive inverse is just a fancy way to say a - a = 0 or given any number (call it a) there is another number (-a) that you can add to a a+ (-a) to get zero.

8. anonymous

so is it A? or not? i'm wanting to figure this out by knowing the answer and figuring out how you got it.

9. phi

which of the answers shows 2 numbers added together that give you zero?

10. phi

option A is an example of the "identify property of addition" See http://www.khanacademy.org/video/identity-property-of-0?playlist=Developmental+Math+2

11. anonymous

Well D does and that's pretty much it

12. phi

Yes, and notice that one of the numbers is 8 and the other is -8 so 8 and -8 are additive inverses. It is a definition, so you have to memorize it.

13. phi

Watch Khan's video's if this is confusing, it will help it all sink in.

14. anonymous

ok now..let's go to the next one and ill see if im right