math

Write the number in scientific notation.

89,000,000,000

A 4-minute egg is cooked for what fraction of an hour? (1 hour = 60 min)?

ADD
4 7/9+ 5 2/9

Erika spent 5/6 hr on her computer visiting the history channel and the discovery channel websites. She spent 1/5 hr at the history channel website. How many hours did she spend at the discovery channel website?

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  1. I'll be glad to check your answers.

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    Ms. Sue
  2. 8.9*10^9

    1/15 of an hour

    90/9

    19/30

    x=900

    72

    $17.28

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  3. BUBBA's answers start with a wrong answer.

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  4. Thanks are any of them right?

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  5. I repeat -- we'll be glad to check YOUR answers.

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    Ms. Sue
  6. here are my answers please see if i am correct?

    1. 8.9 *10^10

    2. 4/60=1/15

    3. 10

    4.38/60

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  7. Yes!
    All answers are correct.
    Note that answer 4 could be reduced to 19/30 hours.

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