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9 May, 19:40

Solve log 2x + log 5 = 1. Round to the nearest thousandth if necessary.

A. 25

B. 4

C. 1

D. 100

+5
Answers (1)
  1. 9 May, 21:30
    0
    First condense the log

    log 2x + log 5 = 1

    log 2x*5 = 1

    log 10x = 1

    Take the base 10 of each side to clear the log

    10^ (log10x) = 10^1

    10x = 10

    x = 1

    The answer is C
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