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Math Help - Express y correct to 2 decimal places

  1. #1
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    Express y correct to 2 decimal places

    If y = 2392.25x0.65-26.2x3.82
    0.062

    Express y correct to 2 decimal places
    Express y correct to 3 significant places
    Express y in scientific notation correct to 3 significant figures.

    I will appreciate if someone can help?


    thank you
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  2. #2
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    Joined
    Feb 2009
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    1) 1454.88

    2) 1454

    3) 1.45x10^3

    not sure about number 2from what you wrote as the question,
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  3. #3
    MHF Contributor
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    South Coast of England
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    Hello Steven777
    Quote Originally Posted by Steven777 View Post
    If y = 2392.25x0.65-26.2x3.82
    0.062

    Express y correct to 2 decimal places
    Express y correct to 3 significant places
    Express y in scientific notation correct to 3 significant figures.

    I will appreciate if someone can help?


    thank you
    My calculator gives y = 23465.78225806451...

    Correct to 2 d.p. this is 23465.78
    To 3 s.f. this is 23500
    In scientific notation, to 3 s.f., it is 2.35 \times 10^4

    Grandad

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