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Taylor0402

  • one year ago

The circumference of the Earth is approximately 131,000,000 ft. a. Write this number in scientific notation and tell how you knew whether to use a positive or a negative exponent. b. The circumference of Mars is 7.00 x 107. Which planet is larger, and by how many feet? Write the answer in both standard and scientific notation.

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  1. Taylor0402
    • one year ago
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    i dont know how to explain my answer for letter a

  2. anonymous
    • one year ago
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    I would say you use a positive exponent because the number is greater than 1.

  3. Taylor0402
    • one year ago
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    yea i know but do you want me to say the Earths cumfrence is a positive 8 because i moved the decimal point to the left

  4. Taylor0402
    • one year ago
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    sorry i ment to the right

  5. texaschic101
    • one year ago
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    use a positive exponent when there is no numbers behind a decimal. Example : 75,000,000 use a negative exponent when there is numbers behind the decimal Example : 0.0000037

  6. Taylor0402
    • one year ago
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    i know that but now i get it i just had to see myself type the answer...thanks to both of you guys

  7. texaschic101
    • one year ago
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    @RigelCanopus ...pretty much summed it up. Use positive because number is greater then 1, use negative when number is less then 1

  8. Taylor0402
    • one year ago
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    i would have to agree

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