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ICSE Class 9 Answered

Solve  for x:log10 (x-5)=-1
Asked by janhavitopkhane68.9spicertl | 26 Jul, 2020, 05:14: PM
answered-by-expert Expert Answer
log10 x-5 = -1
10 to the power of log subscript 10 space left parenthesis straight x minus 5 right parenthesis end exponent equals 10 to the power of negative 1 end exponent rightwards double arrow straight x minus 5 equals 1 over 10 space space space.... space left parenthesis Since space straight a to the power of log subscript straight a space straight x end exponent equals straight x right parenthesis rightwards double arrow straight x equals 1 over 10 plus 5 rightwards double arrow straight x equals 51 over 10 rightwards double arrow straight x equals 5.1
Answered by Renu Varma | 27 Jul, 2020, 12:29: PM

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