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anonymous

  • one year ago

Classify the numbers as rational or irrational. negative 4/5 square root of two 2.5 0.44444444... square root of 16 @Hero @dan815 @nincompoop

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  1. anonymous
    • one year ago
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    please help me someone

  2. welshfella
    • one year ago
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    all rational number can be expressed as a fraction a/b eg 1/2 , 3/4 . 6 ( = 6/1) are all rational

  3. welshfella
    • one year ago
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    so how about -4/5 ?

  4. welshfella
    • one year ago
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    - thay can be negative fractions as well as posituve

  5. welshfella
    • one year ago
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    is -4/5 a fraction?

  6. anonymous
    • one year ago
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    so negative 4/5 and 2.5 and the square root of 16 are all rational

  7. welshfella
    • one year ago
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    right

  8. welshfella
    • one year ago
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    what about 0.4444... this is 0.4 recurring - meaning it 'goes on forever' but can it be written as a fraction?

  9. anonymous
    • one year ago
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    no

  10. welshfella
    • one year ago
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    it can actually 1/9 = 0.11111111.. so 0.44444444... is 4/9 so its rational

  11. anonymous
    • one year ago
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    that makes more sense

  12. welshfella
    • one year ago
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    the only one which is irrational is sqrt2

  13. welshfella
    • one year ago
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    there are many like that , sqrt3, sqrt6, sqrt8 . sqrt 17 and so on

  14. anonymous
    • one year ago
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    ok thanks

  15. welshfella
    • one year ago
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    yw

  16. anonymous
    • one year ago
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    i have another question

  17. welshfella
    • one year ago
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    ok but i only have 5 minutes

  18. anonymous
    • one year ago
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    What is the product of 1.7 × 10−13 and 3.5 × 1025? 1.8 × 10^12 2.06 × 10^12 3.5 × 10^12 5.95 × 10^12

  19. anonymous
    • one year ago
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    What is the product of 1.7 × 10^−13 and 3.5 × 10^25? 1.8 × 10^12 2.06 × 10^12 3.5 × 10^12 5.95 × 10^12

  20. welshfella
    • one year ago
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    multiply 1.7 by 3.5 then add the exponents 10^-13 * 10^25 = 10^(-13+25) = 10^ ?

  21. welshfella
    • one year ago
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    gtg

  22. anonymous
    • one year ago
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    ok bye

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