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15 September, 15:51

Marie scored 95,86 and 89 on three science tests she wants her average score for 6 test to be at least 90 what inequality can you write to find the average scores that she can get on her next three test to meet this goal? Use s to represent the lowest average score

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  1. 15 September, 17:45
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    (3s + 270) / 6 > 90

    s = 90; lowest average score

    95+86+89 = 270

    (3s + 270) / 6 > 90

    * 6 * 6

    3s + 270 > 540

    - 270 - 270

    3s > 270

    :3 : 3

    s > 90

    To check:

    (3s + 270) / 6 > 90

    (3 (90) + 270) / 6 > 90

    (270 + 270) / 6 > 90

    540 / 6 > 90

    90 > 90
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Home » Mathematics » Marie scored 95,86 and 89 on three science tests she wants her average score for 6 test to be at least 90 what inequality can you write to find the average scores that she can get on her next three test to meet this goal?
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