document.write( "Question 8411: How do you work this problem:\r
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document.write( "Solve for x in this equation:
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document.write( "(2/3)^x = 9/4 \n" );
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Algebra.Com's Answer #4655 by khwang(438)![]() ![]() ![]() You can put this solution on YOUR website! (2/3)^x = 9/4 \n" ); document.write( " \n" ); document.write( " Since 9/4 = (3/2)^2 and \n" ); document.write( " (3/2) = (2/3)^(-1)\r \n" ); document.write( "\n" ); document.write( " So, 9/4 = (3/2)^2 = [(2/3)^(-1)]^2 = (2/3)^(-2) \n" ); document.write( " and we get (2/3)^x = (2/3)^(-2) \n" ); document.write( " \n" ); document.write( " Therefore ,by comparing the exponent, \n" ); document.write( " we obtain x = -2. \n" ); document.write( " (or by taking the logarithm with base 2/3 on \n" ); document.write( " both sides]\r \n" ); document.write( "\n" ); document.write( " Kenny\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |