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Mathematics 18 Online
CC12:

PLEASE HELP ASAP Select from the drop-down menus to correctly identify whether the given operation is closed or not closed with respect to each set of numbers. Real numbers are (closed,not closed) under addition Integers are ( closed, not closed) under division. Irrational numbers are (closed, not closed) under multiplication. Rational numbers are ( closed, not closed) under subtraction.

CC12:

@Allison can you please hep me?

Allison:

Do you just choose if it's closed or not?

CC12:

Yes

Allison:

Real numbers are closed under addition

Allison:

1 attachment
CC12:

Thank you so much

CC12:

So there all closed ??

Allison:

No no let me finish lol sorry went to do something.

CC12:

its ok

Allison:

Integers are not closed under division.

Allison:

Irrational numbers

1 attachment
CC12:

so its not closed ??

Allison:

I'm not sure.

Allison:

@Vocaloid

CC12:

Ok thank you and the last one (CLOSED)

Allison:

Yes last one is closed :]

CC12:

Thank you so much

Allison:

Of course!

CC12:

can u help me with one more

Allison:

Okay I can try

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