(Please help, anyone) The mean of four numbers is 7. Three of the numbers are 5, 7, and 7. What is the fourth number? Explain yo

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(Please help, anyone)

The mean of four numbers is 7. Three of the numbers are 5, 7, and 7. What is the fourth number? Explain your reasoning.

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Ladonna 6 months 2021-08-07T12:49:24+00:00 1 Answers 10 views 0

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  1. trungdung22
    1
    2021-08-07T12:50:25+00:00
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    Answer:

    9

    Step-by-step explanation:

    mean = \frac{5 + 7 + 7 + x}{4} = 7

    Solving for x,

    x = 9

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