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Yolo4mecuite

  • 3 years ago

Which number is irrational? Select one: a. √169 b. √144 c. √81 d. √156

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  1. Azteck
    • 3 years ago
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    What's a rational number?

  2. Yolo4mecuite
    • 3 years ago
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    A rational number is a number that can be expressed as a fraction or ratio (rational). The numerator and the denominator of the fraction are both integers.

  3. Azteck
    • 3 years ago
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    A rational number can also be a whole number.

  4. Azteck
    • 3 years ago
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    so the square root of 169 is 13, correct?

  5. Azteck
    • 3 years ago
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    The number 13 is a rational number because it's a whole number.

  6. godorovg
    • 3 years ago
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    yes 13 is right for 169

  7. Azteck
    • 3 years ago
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    That means option A is not irrational, thus not the correct answer.

  8. Azteck
    • 3 years ago
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    Option B is not irrational as well because that will give you 12. So is option C. That also gives you a whole number of 9.

  9. Azteck
    • 3 years ago
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    Tell me what option D would give me? @Yolo4mecuite

  10. godorovg
    • 3 years ago
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    option D is 12.5 for squr 156

  11. Yolo4mecuite
    • 3 years ago
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    Yeah ^^^^

  12. Yolo4mecuite
    • 3 years ago
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    So D is rational

  13. godorovg
    • 3 years ago
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    no we are looking for irrational

  14. Yolo4mecuite
    • 3 years ago
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    Yes sorry

  15. Yolo4mecuite
    • 3 years ago
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    12.5 is not s whole number so it is irrational

  16. godorovg
    • 3 years ago
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    I knew it was D, was just trying to teach

  17. Yolo4mecuite
    • 3 years ago
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    Oh ok Thank you! :)

  18. godorovg
    • 3 years ago
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    hope I helped not hindered here.

  19. Azteck
    • 3 years ago
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    12.5 is a rational number. That's a fraction with integers. The square root of 156 does not contain recurring numbers which means it's irrational.

  20. godorovg
    • 3 years ago
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    yep you are right :)

  21. godorovg
    • 3 years ago
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    good job..

  22. SWAG
    • 3 years ago
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    Nice Work!

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