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## anonymous one year ago Rational Numbers and Expressions! Which Property is the following 15 + (k + 4) = 15 + (4 + k) Is it a... Closure property of addition? Closure property of multiplication? Commutative property of addition? Commutative property of multiplication? Associative property of addition? Associative property of multiplication? Identity property of addition? Identity property of multiplication? Inverse property of addition? Inverse property of multiplication? or a Distributive property or is the statement false? (I need help. I have 12 questions and I'm having trouble)

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1. Mehek14

Associative property of addition

2. Mehek14

because it doesn't matter where you put the parenthesis

3. anonymous

thanks! could you help me with some more?

4. anonymous

@Mehek14

5. Mehek14

yea sure

6. anonymous

15 + (4 + k) = (15 + 4) +k

7. Mehek14

that's associative property of addition as well

8. anonymous

Thanks! 15 - (4 - k) = (15 - 4) - k

9. Mehek14

choices?

10. anonymous

it's the same choices

11. Mehek14

i don't see anything for subtraction

12. Mehek14

they're all addition or multiplication

13. anonymous

Do you think it might be Distributive property?

14. Mehek14

distributive property = 5(6+3) = 30 + 15

15. Mehek14

so no

16. anonymous

Okay I'll just mark it for reveiw. Could you still help me with the others?

17. Mehek14

yea

18. anonymous

$\left[ -6 * \left( -\frac{ 1 }{ 6 } \right) \right] n =1 * n$

19. Mehek14

choices?

20. Mehek14

if it's true or false, it's true

21. anonymous

I think it might be inverse property of multiplication

22. anonymous

what do you think?

23. Mehek14

inverse property of multiplication = $$\dfrac{7}{4}*\dfrac{4}{7}=1$$

24. anonymous

So no?

25. Mehek14

probably

26. Mehek14

for the ones ur not sure, make a separate post and other people will try to help

27. anonymous

Okay. Thanks for your help!

28. Mehek14

yw :)

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