document.write( "Question 202363: if (125/27)^x = the cubic root of 0.6 then the value of x is _______\r
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Algebra.Com's Answer #152589 by Theo(13342)\"\" \"About 
You can put this solution on YOUR website!
your original equation is:
\n" ); document.write( "\"%28125%2F27%29%5Ex+=+%28.6%29%5E%281%2F3%29\"
\n" ); document.write( "by the laws of logarithms, this can only be true if and only if
\n" ); document.write( "\"log%28%28125%2F27%29%2C%28%28.6%29%5E%281%2F3%29%29%29+=+x+\"
\n" ); document.write( "we can convert this log with a base of (125/27) to a log with a base of 10 so that we can solve it using the calculator.
\n" ); document.write( "the logarithm base conversion formula is:
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\n" ); document.write( "our formula now becomes:
\n" ); document.write( "\"+log%2810%2C%28%28.6%29%5E%281%2F3%29%29%29+%2F+log%2810%2C%28125%2F27%29%29+\" = x.
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\n" ); document.write( "now:
\n" ); document.write( "\"log%2810%2C%28%28.6%29%5E%281%2F3%29%29%29\" is the same as \"%281%2F3%29%2A%28log%2810%2C%28.6%29%29%29\".
\n" ); document.write( "also:
\n" ); document.write( "\"+log%2810%2C%28125%2F27%29%29+\" is the same as \"+log%2810%2C125%29+-+log%2810%2C27%29+\"
\n" ); document.write( "so the equation becomes:
\n" ); document.write( "x = \"%28%281%2F3%29%2A%28log%2810%2C%28.6%29%29%29%29\" / \"+%28log%2810%2C125%29+-+log%2810%2C27%29%29+\"
\n" ); document.write( "you can now use your calculator to solve this.
\n" ); document.write( "the equation becomes:
\n" ); document.write( "x = \"%28%281%2F3%29%2A%28-.22184875%29%29%2F%28%282.096910013%29-%281.431363764%29%29\"
\n" ); document.write( "which becomes:
\n" ); document.write( "x = \"%28-0.073949583%29%2F%28.665546249%29\"
\n" ); document.write( "which becomes:
\n" ); document.write( "x = -0.1111111111111
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\n" ); document.write( "to prove your answer is correct, substitute it in the original equation to get:
\n" ); document.write( "\"%28125%2F27%29%5E%28-0.111111111111%29+=+%28.6%29%5E%281%2F3%29\"
\n" ); document.write( "this becomes:
\n" ); document.write( "\"0.843432665+=+.843432665\"
\n" ); document.write( "which is true.
\n" ); document.write( "note that .843432665 = (.6)^(1/3)
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