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calculusxy

  • one year ago

MEDAL for checking an answer with Scientific Notations operation! Question posted below...

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  1. calculusxy
    • one year ago
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    \[\huge 5.3 \times 10^{-5} \times 8.8 \times 10^{-3}\]

  2. calculusxy
    • one year ago
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    \[\huge Answer \] \[\large 4.664 \times 10^{-7}\]

  3. Hero
    • one year ago
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    Result can only be accurate to two decimal places

  4. Hero
    • one year ago
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    Also you added exponents incorrectly

  5. calculusxy
    • one year ago
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    I don't understand ...

  6. Hero
    • one year ago
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    When you multiply using decimals you have to count the total number of digits that occur after the decimal point. In this case there are two . One for each number . So your answer can only be accurate to two decimal places.

  7. calculusxy
    • one year ago
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    Can you explain this to me more with the question? I can't grasp what you're trying to say

  8. Hero
    • one year ago
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    One moment

  9. calculusxy
    • one year ago
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    @Hero

  10. Hero
    • one year ago
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  11. calculusxy
    • one year ago
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    so where was my mistake?

  12. Hero
    • one year ago
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    You have three digits expressed after the decimal in your answer

  13. Hero
    • one year ago
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    µo you have to use rules of exponents When multiplying powers.

  14. calculusxy
    • one year ago
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    but the answer after i multiplied was 46.64.. so i moved it one space to the left to make it between 1 and 10 and so i got 4.664.

  15. Hero
    • one year ago
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    The exponent part is definitely incorrect though

  16. calculusxy
    • one year ago
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    can you explain to me how?

  17. Hero
    • one year ago
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    Because you add exponents when multiplying powers

  18. calculusxy
    • one year ago
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    i did .

  19. calculusxy
    • one year ago
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    didn't i?

  20. Hero
    • one year ago
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    You know, I realise now that your result IS correct

  21. calculusxy
    • one year ago
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    okay thank you. can you make sure another answer of mine? \[\large 6.4 \times 10^{-1} \times 6.6 \times 10^{-9}\]

  22. calculusxy
    • one year ago
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    would the answer be \[\large 4.224 \times 10^{-9}\]

  23. calculusxy
    • one year ago
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    @Hero

  24. Hero
    • one year ago
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    If you followed the same format as you did with your previous problem, it should be correct. You can check with wolfram

  25. calculusxy
    • one year ago
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    Okay thank you so much!!!!!!

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