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EmmaH

  • 2 years ago

Evaluate and write the answer in scientific notation: 1.6 x 105/8 1.6 x 10-3 1.6 x 103

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  1. EmmaH
    • 2 years ago
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  2. tcarroll010
    • 2 years ago
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    It's the second one: 1.6 x 10^(-3) you would divide 4 by 2.5 and you would divide 10^5 by 10^8. Dividing 4 by 2.5 yields 1.6 and since that number is between 1 and 10, we don't have to adjust the decimal point. When dividing 10^5 by 10^8, you just subtract the exponents.

  3. EmmaH
    • 2 years ago
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    thank you

  4. tcarroll010
    • 2 years ago
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    You're welcome!

  5. EmmaH
    • 2 years ago
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    =D

  6. EmmaH
    • 2 years ago
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    i have one question though in equations you always add the exponents when its like this?:(4.1 x 10^5)(2 x 10^7) so it would be 8.2x10^12 ?

  7. EmmaH
    • 2 years ago
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    and here would you add the exponents?

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  8. tcarroll010
    • 2 years ago
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    You still subtract the exponents because it is still division. If you were multiplying, then you would add exponents.

  9. EmmaH
    • 2 years ago
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    again thank nyou!

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