Question

For which operations is the set {–1, 1} closed?

Choose all answers that are correct.

A.
addition

B.
subtraction

C.
multiplication

D.
division

Answer 1

@sarah2453

Answer 2

@ganeshie8

Answer 3

Multiplication...I think is it supposed to be (-1, 0, 1)

Answer 4

ok but it is more than one @sarah2453

Answer 5

What?

Answer 6

OHHHH... No just Multiplication

Answer 7

ok can i ask a few more @sarah2453

Answer 8

yes

Answer 9

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

Choose all answers that are correct.

A.
–1 • –1 = 1

B.
0 • –1 = 0

C.
0 • 2 = 0

D.
2 • 1 = 2


@sarah2453

Answer 10

A.
–1 • –1 = 1

B.
0 • –1 = 0

C.
0 • 2 = 0

D.
2 • 1 = 2

Answer 11

A and D

Answer 12

thanks
Which sets of numbers are closed under division?

Choose all answers that are correct.

A.
rational numbers

B.
integers

C.
{–1, 0, 1}

D.
whole numbers

Answer 13

@sarah2453

Answer 14

B

Answer 15

A and B

Answer 16

c and d set is ciosed

Answer 17

ok so it is a and b

Answer 18

i am talking about 1st question.

Answer 19

Yes A and B @ineedurhelpnow

Answer 20

ok

Numbers p and q are whole numbers.

Which statements are always true?

Choose all answers that are correct.

A.
p + q is a whole number

B.
p – q is a whole number

C.
p • q is a whole number

D.
is a whole number

Answer 21

@sarah2453

Answer 22

@surjithayer

Answer 23

@kkay_light

Answer 24

@thephenom

Answer 25

@micahm

Answer 26

@surryyy

Answer 27

@Zarkon

Answer 28

@dumbcow

Answer 29

A and C, I believe, If Im wrong, heres a medal

Answer 30

ok thanks can i ask one more

@LunyMoony

Answer 31

Sure

Answer 32

Is the set of multiples of 5 closed under division? Explain why or provide a counterexample if not.

A.
Yes, because the quotient of any two multiples of 5 is also a multiple of 5.

B.
Yes, because the quotient of any two multiples of 5 is also a multiple of 10.

C.
No, and a counterexample is 100 ÷ 5 = 20.

D.
No, and a counterexample is 25 ÷ 50 = .

Answer 33

@KailaMorgan7777

Answer 34

i think B

Answer 35

thanks @KailaMorgan7777

Answer 36

no problem(: