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7 June, 06:12

Which value of x makes the numerical sentence true? 25^ 1/2 * 5 ^-3 = 5 ^x

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Answers (2)
  1. 7 June, 06:18
    0
    25^1/2 * 5^-3 = 5 ^x

    (5^2) 1/2 * 5^-3 = 5^x

    5^1 * 5^-3 = 5^x

    5^-2 = 5^x

    -2 = x

    or

    x = - 2

    answer

    x = - 2 makes the numerical sentence true
  2. 7 June, 06:35
    0
    5^-3=0.008

    1/2=0.5

    0.5*0.008=0.004

    5/0.004=1250
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