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anonymous

  • one year ago

How do you write the number 4.2 × 10-1 in standard form? help please 0.0042 0.42 420 4.2

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  1. texaschic101
    • one year ago
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    look at your 4.2....and being that the exponent is -1....we start at the decimal and move to the left 1 space.....making it 0.42

  2. texaschic101
    • one year ago
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    also, keep in mind, if it is a negative exponent, then the number will be below 1.

  3. texaschic101
    • one year ago
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    understand ? For instance, if it was 4.2 x 10^-2......start at 4.2 and move the decimal 2 spaces to the left...making it .042

  4. anonymous
    • one year ago
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    It would be B

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