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6 March, 03:36

Solve for x.

28^x=7

(x is the exponent)

+3
Answers (1)
  1. 6 March, 06:35
    0
    28^x = 7

    Take logs of both sides:-

    log 28^x = log 7

    x log28 = log 7

    x = log 7 / log 28 = 0.584 correct to 3 dec places.
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