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Kitten_is_back

  • one year ago

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 a b c

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  1. Kitten_is_back
    • one year ago
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    @zepdrix

  2. zepdrix
    • one year ago
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    To show `whole numbers` are closed under `multiplication` We take `two whole numbers` and `multiply them` to get another whole number. This illustrates closure. So we need to `start with` two whole numbers. -1 is NOT a whole number. a, b, and c are not necessarily whole numbers, we don't know enough about them.

  3. Kitten_is_back
    • one year ago
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    okay

  4. zepdrix
    • one year ago
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    So we can't pick an option that is showing -1 in the multiplication and we can't pick the option with a,b and c's and stuff like that.

  5. zepdrix
    • one year ago
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    What does that leave you with? :o

  6. Kitten_is_back
    • one year ago
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    OOHHHHHHHHHHHHHHHHHHH OKAY SO I WAIT WHAT SO D

  7. zepdrix
    • one year ago
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    no :(

  8. Kitten_is_back
    • one year ago
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    ;-; WWHATTTTTTTT

  9. Kitten_is_back
    • one year ago
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    b

  10. Kitten_is_back
    • one year ago
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    @zepdrix

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