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20. Find the value of m for 5^2m÷(5^-3)^3=(1/5)^-1. Give right answer |
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Answer» 2m ÷ ( 5 ^ - 3 ) ³ = ( 1 / 5 ) ^ - 1 1953125 × 5 ^ 2m = 5 5 ^ 2m = 1 / 390625 LOG ( 5 ^ 2m ) = log ( 1 / 390625 ) 2m log ( 5 ) = log ( 1 / 390625 ) 2m = log ( 1 / 390625 ) / log ( 5 ) 2m = log5 ( 1 / 390625 ) m = - 8 / 2 hope helpful for you |
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