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Mathematics 22 Online
CC12:

Please help PLEASE HELP ASAP (MORE THEN ONE ANSWER) Which equations support the fact that rational numbers are closed under addition? Select each correct answer. √10+(−√10)=0 3√16+3√16=6√16 3√5+√5=4√5 1/2+0.5=1

Allison:

Can you get a picture of the choices? It's kind of hard to tell. >.<

CC12:

Yes i can

Allison:

Okiee.

Allison:

@PandaSurvive

CC12:

1 attachment
CC12:

Sorry im having internet issues.

Allison:

I have no idea how to work with square roots >.< Do you have any guesses?

CC12:

B and C but im not sure

Allison:

@AngeI

CC12:

@Vocaloid

Allison:

@PandaSurvive @AngeI @AnimeLuver10023

PandaSurvive:

I was summoned?

CC12:

Can u help me

Allison:

Help CC12.

PandaSurvive:

Easiest way to do this is with a Calculator, do you have one on your pc?

Allison:

I do I doooo

Allison:

First one is true it's = to 0

CC12:

Sorry I'm having problems with my internet

PandaSurvive:

Its all good

PandaSurvive:

3sqrt(16) is 12

PandaSurvive:

6sqrt(16) is 24

PandaSurvive:

so does 12+12=24?

CC12:

Yes

PandaSurvive:

so B is correct

Allison:

1 attachment
PandaSurvive:

3sqrt(5) rounds to 6.7

PandaSurvive:

sqrt(5) rounds to 2.2

PandaSurvive:

4sqrt(5) is rounded to 8.9

CC12:

Yess

PandaSurvive:

good

PandaSurvive:

and what about the last one?

Allison:

1 attachment
Allison:

Like that?

CC12:

Thank u so much

PandaSurvive:

now try to figure out the answer

Allison:

Angel the last one is wrong .-.

Allison:

Right lol. Right? Right. Right??

CC12:

It was b and d

CC12:

Thanks so much guys

PandaSurvive:

i didnt say the answer yet i just solved e.e

CC12:

Oops

PandaSurvive:

x'D

Allison:

Did you pass? D:

CC12:

Nope 77%

PandaSurvive:

77 is passing

CC12:

I have pass with a 80 or higher

Allison:

Do you have to retake it?

CC12:

Yes I do but I can't take it until later

CC12:

Thanks so much

Allison:

Okay good luck on it later then (:

PandaSurvive:

Youre welcome, sorry for not pointing that out sooner ;~;

Vocaloid:

it is asking about rational numbers being closed under addition/subtraction therefore you must only pick the answer choices where ~rational~ numbers are being added together as a review, numbers that are not perfect squares (like 10 and 5) are not rational when you take their roots

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