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anonymous

  • one year ago

how you knew whether to use a positive or a negative exponent.

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  1. anonymous
    • one year ago
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    how old are you?

  2. anonymous
    • one year ago
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    what math class? :)

  3. anonymous
    • one year ago
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    @zzr0ck3r

  4. zzr0ck3r
    • one year ago
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    it depends. A negative exponent, just means put it all under 1 and make the exponent positive. \(2^{-1}=\dfrac{1}{2^1}=\dfrac{1}{2}\) \(3^{-4}=\frac{1}{3^4}\) Make sense?

  5. anonymous
    • one year ago
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    so if i wanted to change this into a scientific notation how would i determine if it was negative or positive?

  6. anonymous
    • one year ago
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    131,000,000 ft.

  7. anonymous
    • one year ago
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    u didn't ask my question hmmm i asked that to know the things you already know|dw:1442525200620:dw|

  8. anonymous
    • one year ago
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    8th :)

  9. anonymous
    • one year ago
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    if you move from left the exponent is positive from right, negative

  10. anonymous
    • one year ago
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    is this from chemistry?

  11. zzr0ck3r
    • one year ago
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    \(0.0003896=3.896\times 10^{-4}\) \(3896000=3.896\times 10^6\)

  12. anonymous
    • one year ago
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    no this was the question i had The circumference of the Earth is approximately 131,000,000 ft. a. Write this number in scientific notation and tell how you knew whether to use a positive or a negative exponent.

  13. zzr0ck3r
    • one year ago
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    \(131000000=1.31\times 10^8\) We want it so that there is only one number before the decimal. Since we need to move it left \(6\) times we get a positive \(6\).

  14. anonymous
    • one year ago
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    oh well he already did the work i'm about to do...

  15. anonymous
    • one year ago
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    ohhh ok thank you soo much for helping me!:D

  16. zzr0ck3r
    • one year ago
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    no problem.

  17. zzr0ck3r
    • one year ago
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    that \(6\) shuold be an \(8\)..

  18. anonymous
    • one year ago
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    gotcha :)

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