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nuccioreggie

  • one year ago

Which expression is equivalent to 54 ⋅ 5–6? 5–10 56 fraction 1 over 5 to the power 2 fraction 1 over 5 to the power negative10

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  1. nuccioreggie
    • one year ago
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    @whpalmer4

  2. Vocaloid
    • one year ago
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    rule of exponents: a^b/a^c = a^(b-c)

  3. nuccioreggie
    • one year ago
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    @Triciaal

  4. nuccioreggie
    • one year ago
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    @welshfella

  5. nuccioreggie
    • one year ago
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    Please help dont leave

  6. whpalmer4
    • one year ago
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    is that \[54\cdot 5^{-6}\]

  7. whpalmer4
    • one year ago
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    or \[5^4\cdot 5^{-6}\]?

  8. whpalmer4
    • one year ago
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    I'm guessing the latter

  9. welshfella
    • one year ago
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    I'm a bit confused by the question is it |dw:1433799168849:dw|

  10. nuccioreggie
    • one year ago
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    Yea the second one u drew @whpalmer4

  11. whpalmer4
    • one year ago
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    oh, yeah, it must be \[5^4 * 5^{-6}\] okay, so rules of exponents, if you multiply two exponents with the same base, \[b^m*b^n = b^{m+n}\]

  12. whpalmer4
    • one year ago
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    here you have \[5^4*5^{-6} = 5^{4+(-6)} =\]

  13. nuccioreggie
    • one year ago
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    I think B

  14. whpalmer4
    • one year ago
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    B is \[5^6\]right?

  15. whpalmer4
    • one year ago
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    what does \[ 4 + (-6) = \]

  16. nuccioreggie
    • one year ago
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    -2

  17. nuccioreggie
    • one year ago
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    And yes it is

  18. nuccioreggie
    • one year ago
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    U there do you know the answer?

  19. nuccioreggie
    • one year ago
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    I have 1 more question by the way

  20. nuccioreggie
    • one year ago
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    Do you know the answer @welshfella

  21. whpalmer4
    • one year ago
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    so \[5^{-2}\]but does that appear in your answer choices?

  22. whpalmer4
    • one year ago
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    here's another property of exponents: \[b^{-n} = \frac{1}{b^n}\]

  23. nuccioreggie
    • one year ago
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    So ok its C

  24. whpalmer4
    • one year ago
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    yes. \[5^{-2} = \frac{1}{5^2}\]

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