Question

Which equations show that the set of whole numbers is closed under addition?

Choose all answers that are correct.

A.
0 + (–1) = –1

B.
1 + 1 = 2

C.
2 + 0 = 2

D.
2 + (–1) = 1

Answer 1

@Michele_Laino

Answer 2

@Ilovecake

Answer 3

@emma.monsterr

Answer 4

@Sup???

Answer 5

@IrishBoy123

Answer 6

@shinebrightlikeadimon

Answer 7

@abswag13

Answer 8

@woodrow73

Answer 9

@They_Call_Me_Narii

Answer 10

@OregonDuck

Answer 11

@spacemountain

Answer 12

@shinebrightlikeadimon

Answer 13

@EclipsedStar

Answer 14

what does it mean to be 'closed' ?

Answer 15

idk what they mean by closed under addition

Answer 16

google the phrase: "closed under addition" and you should get a rough idea, or at least a basis to work from.

Answer 17

ok

Answer 18

consider 'closure' like being locked in a room .. nothing can get in or out.

the only thing we have to work with, is what is in the room with us.

now we are told that all we have to work with, is whole numbers, and addition.

if thats all we have to work with, then that is all that can appear in our work.

Answer 19

which options only have whole numbers, and addition to work with?

Answer 20

b

Answer 21

am i right

Answer 22

B is good, and one more

Answer 23

a

Answer 24

1,1,2 are all whole numbers, and + is addition, B works great

Answer 25

is -1 a whole number?

Answer 26

d

Answer 27

is -1 a whole number?

Answer 28

am i right

Answer 29

you havent answered my question

Answer 30

yes it is

Answer 31

ok, so you dont know what a whole number is, there is another point of study for you.

Answer 32

look up the set of whole numbers, and define it for me

Answer 33

So in this case, closure under addition means for all . This set isn't closed under addition; consider . Closure under multiplication in this case means for all . This set is closed under multiplication; simply write out all possible products of elements

Answer 34

In mathematics, the natural numbers (sometimes called the whole numbers) are those used for counting (as in "there are six coins on the table") and ordering (as in "this is the third largest city in the country").