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calculusxy

  • one year ago

MEDAL for Scientific Notation Operations help!!! 5.4 x 10^2 x 7.5 x 10^{-7}

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  1. calculusxy
    • one year ago
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    \[\huge 5.4 \times 10^2 \times 7.5 \times 10^{-7}\]

  2. imqwerty
    • one year ago
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    scientific notation of 23.212 x10^3 is 2.3212 x 10^4

  3. imqwerty
    • one year ago
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    jst an example^

  4. calculusxy
    • one year ago
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    \[\large (5.4 \times 7.5)(10^2 \times 10^{-7}) = 40.50 \times 10^{-5}\] I don't know how to go from there.

  5. welshfella
    • one year ago
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    first find 5.4 * 7.5 then 10^2 * 10^-7

  6. welshfella
    • one year ago
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    right now that's not scientific notation because 40.5 is not between 1 and 10

  7. welshfella
    • one year ago
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    Hint: part of the next procedure is to divide 40.5 by 10

  8. calculusxy
    • one year ago
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    okay. so that would be 4.05

  9. welshfella
    • one year ago
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    - but os corse you have to retain the correct value of the number

  10. calculusxy
    • one year ago
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    \[4.05 \times 10^{-1} \times 10^{-5}\]

  11. calculusxy
    • one year ago
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    would it be something like that?

  12. welshfella
    • one year ago
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    you have to multiply the exponent part by 10

  13. welshfella
    • one year ago
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    you are not correct in the last post

  14. calculusxy
    • one year ago
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    okay. so can you explain to me how i should do it?

  15. welshfella
    • one year ago
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    its 4.05 * 10^1 * 10^-5

  16. welshfella
    • one year ago
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    since we divided 40.5 by 10 we need to do the inverse, multiply, exponent part by 10 to reatain the correct value

  17. calculusxy
    • one year ago
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    oh is it because i have to multiply 10^1 to get to 40.50 and then go about from there?

  18. calculusxy
    • one year ago
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    oh ok. so the answer would be \[\large 4.5^{-4}\]

  19. welshfella
    • one year ago
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    No its 4.05 * 10^-4

  20. calculusxy
    • one year ago
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    oh yeah sorry typo

  21. welshfella
    • one year ago
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    |dw:1443291233159:dw|

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