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10 June, 14:02

If a mean of 3,6, a, 9 and 10 is 7 find the value of a

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Answers (2)
  1. 10 June, 16:34
    0
    Step-by-step explanation:

    Mean = 7

    3 + 6 + a + 9 + 10 / 5 = 7

    28 + a / 5 = 7

    28 + a = 7 * 5

    28 + a = 35

    a = 35 - 28

    a = 7
  2. 10 June, 17:29
    0
    the value of a is 7
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