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9 February, 16:01

Select all the inrational numbers from the list

A. √16

B. √7

C. 823.1

D. - 9

E. 8. 070070007 ...

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Answers (2)
  1. 9 February, 16:59
    0
    B is one.

    A < C and D are rational

    Im thinking about E. It looks like a recurring decimal at first sight but I think its irrational.
  2. 9 February, 17:41
    0
    The square root of 16 = 4, therefore it is not an irrational number.

    The square root of 7 = 2.64575131106 ... therefore it is an irrational number.

    823.1 ends at 1, therefore it is not an irrational number.

    -9 does not continue forever, therefore it is not an irrational number.

    8.070070007 ... continues on forever, therefore it is an irrational number.

    Thus, the irrational numbers here are: √7 and 8.070070007 ...
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