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broweyebrit

  • 2 years ago

Which of the following represents the set of integers greater than or equal to −5? {−5, −6, −7, …} {−5, −4, −3, …} {−5, −4, −3, …, 3, 4, 5} {all positive numbers}

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  1. tkhunny
    • 2 years ago
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    You tell me why the first one is NOT the answer.

  2. broweyebrit
    • 2 years ago
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    because its less ? @tkhunny

  3. tkhunny
    • 2 years ago
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    Because what is less than -5? -6 < -5 and -7 < -5 etc. Okay, now tell me why the last one is NOT the answer.

  4. broweyebrit
    • 2 years ago
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    because they're not all positive numbers ?

  5. tkhunny
    • 2 years ago
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    ?? No, it includes -6, doesn't it? We already established that -6 < -5. Okay, how about the number 9. Is 9 > -5?

  6. broweyebrit
    • 2 years ago
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    yes

  7. tkhunny
    • 2 years ago
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    Does the third set contain 9?

  8. broweyebrit
    • 2 years ago
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    yes ?..

  9. tkhunny
    • 2 years ago
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    Try again. The third set is finite and contains no integer greater than 5.

  10. broweyebrit
    • 2 years ago
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    i think the answer is {−5, −4, −3, …} or the last one...

  11. tkhunny
    • 2 years ago
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    We certainly ruled out the other three! Good work.

  12. broweyebrit
    • 2 years ago
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    so it is {−5, −4, −3, …} !!!

  13. tkhunny
    • 2 years ago
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    Hold on. I didn't see the fourth one correctly. It does NOT contain -6. It is only POSITIVE numbers. It's problem is two-fold. 1) It contains non-integers, like 3/2 and \(\sqrt{2}\) 2) It fails to contains -3, whcih clearly is greater than -5.

  14. broweyebrit
    • 2 years ago
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    so what does that mean.... ?

  15. tkhunny
    • 2 years ago
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    Nothing new. We ruled it out incorretly, before, but we just ruled it out correctly, so it's still gone and #2 is still the right one. Sorry for confusion.

  16. broweyebrit
    • 2 years ago
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    okay!! thank you so much for your time and help! really means alot!!!! @tkhunny

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