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math

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If i have a test average of 74% and i need to make an average of at least 83% what would the lowest grade i could make be on the final test? (tests are worth 20%)

  • math -

    Which tests are worth 20%?

    If previous tests count 20% and the final test counts 80%,
    0.2*0.74 + 0.8*X = 0.83
    0.8X = 0.682
    X = 85.3%

  • math -

    Explain and show how you would estimate 0.5 x 4.62. Then justify why this is a good choice for arriving at the correct answer.

  • math -

    all tests are worth 20 percent

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