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anonymous

  • 5 years ago

this is the third time iam asking..please help!! Write in Scientific and Decimal Notation (3.16x10^3)(24x10^2)

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  1. anonymous
    • 5 years ago
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    7.58X10^6

  2. anonymous
    • 5 years ago
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    can u explain how to do it? i have a final coming up and i needa know all of this

  3. anonymous
    • 5 years ago
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    significant figuresdasdaerasdsfda

  4. Mertsj
    • 5 years ago
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    For a number to be in scientific notation, it has to have two factors. The first factor must be between 1 and 10 and the second factor must be a power of 10.

  5. anonymous
    • 5 years ago
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    i still dont understand

  6. Mertsj
    • 5 years ago
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    So when you multiply those two numbers you get 75.84 x 10^5

  7. anonymous
    • 5 years ago
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    ohhhhh...so thts the answer in scientific notation! then whadda bout decimal?

  8. Mertsj
    • 5 years ago
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    That is not scientific notation because 75.84 is not between 1 and 10.

  9. anonymous
    • 5 years ago
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    oh...umm..

  10. Mertsj
    • 5 years ago
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    To make it between 1 and 10 we have to move the decimal point 1 place to the left making it 7.584

  11. anonymous
    • 5 years ago
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    First you have to consider the number of significant digits, you go by the term with the lowest amount of significance (24x10^2 in this case has 2 significant digits). Then its a simple matter of multiplication... To convert from scientific notation to decimal notation, you move the decimal place by the amount indicated on the power. (ie, 1x10^2 becomes 100) To go from decimal notation to scientific notation you figure out how many times you must multiply by 10 to reach a point where the number before the decimal is between 1 and 10.

  12. anonymous
    • 5 years ago
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    \[(3.16\times 10^3)(24\times 10^2)=3.16\times 24\times 10^{3+2}\] \[=75.84\times 10^5=75.85\times 100000=7585000=7.54\times 10^6\]\]

  13. Mertsj
    • 5 years ago
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    However we have no right to change the answer so we have to fix what we just did and the way to fix it is to make the exponent 1 greater

  14. Mertsj
    • 5 years ago
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    So now the second factor is 10^6 and our final answer is 7.584 x 10^6

  15. anonymous
    • 5 years ago
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    ohh...okay :D thanks everybody

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