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2 December, 21:14

Which numbers are irrational? Select all that apply.

0 9/15

0 v18

0 v9

0 v169

0 v78

0 3.14

+1
Answers (1)
  1. 3 December, 00:26
    0
    The correct question is;

    Which numbers are irrational? Select all that apply.

    A) 9/15

    B) √18

    C) √9

    D) √169

    E) √78

    F) π = 3.14 ...

    Answer:

    The irrational numbers are;

    √18; √78 and π = 3.14 ...

    Step-by-step explanation:

    An irrational number is a number that cannot be written as the ratio of two integers. Its decimal form does not stop and does not repeat.

    Thus;

    A) 9/15 = 0.6 It's decimal stops after 6 and thus it is not irrational

    B) √18 = 4.242640687119285 ... The decimal doesn't repeat and the continuous dots means it's decimal doesn't stop. Thus it is an irrational number

    C) √9 = 3. Doesn't have a repeating or continuous decimal and thus it's not irrational

    D) √169 = 13. Doesn't have a repeating or continuous decimal and thus it's not irrational

    E) √78 = 8.831760866327846 ...

    The decimal doesn't repeat and the continuous dots means it's decimal doesn't stop. Thus it is an irrational number

    F) π = 3.14 ... The continuous dots means it's decimal doesn't stop. The decimal doesn't repeat and so, it's an irrational function
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