Easy question!!!
Which property justifies this statement?
r(s + t) = rs + rt
A.
associative
B.
distributive
C.
symmetric
D.
transitive

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- anonymous

- chestercat

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- Owlcoffee

Which one would you first-guess it is?

- anonymous

Haha this is my little sisters math question. She thinks A.

- happy_to_help

I think its b

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## More answers

- Owlcoffee

That's not correct; associative property is an axiom that states if we have a sum associated to another, we can associate any term:
\[a+(b+c)=(a+b)+c\]

- anonymous

Now shes saying B.

- sweetburger

|dw:1443217939698:dw|

- NikkiBxox

Distributive! Yay

- Owlcoffee

That is correct;
distributive property describes that if an integer is multiplying a sum of other two, then it is exactly the same as the sum of both terms multiplied independantly by the first one:
\[a(b+c)=ab+ac\]

- anonymous

Last question:Which situation could be solved using this expression?
4k + 2
A.
Jason read four more than twice the number of books that Marty read. How many books did Marty read?
B.
Jason read half as many books as Marty read. How many books did Jason and Marty both read?
C.
Jason read two more than four times the number of books that Marty read. How many books did Jason read?
D.
Jason read four times as many books as Marty. Marty read two books. How many books did they read together?

- Owlcoffee

a first-guess?

- anonymous

She says D?

- Owlcoffee

Yes, you could solve that problem using the given expression, where "a" is the books that Marty read and then, we can conclude that the expression represents the sum of all the books in total they've read.

- Owlcoffee

sorry... k*

- anonymous

So what is it? D or A? lol

- Owlcoffee

D

- anonymous

Thats what She thoguht.

- anonymous

Thought*

- anonymous

It was C.

- Owlcoffee

I see, well, that's what happens when the variables are not specified, I'm sorry :(

- anonymous

She says it's okay.

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