1.

20. Find the value of m for 5^2m÷(5^-3)^3=(1/5)^-1. Give right answer​

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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