document.write( "Question 567199: how do you solve 3.5^x=47.9 without using a calculator? I get really confused when it comes to the decimals.. \n" ); document.write( "
Algebra.Com's Answer #366454 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! 3.5^x=47.9 \n" ); document.write( "---- \n" ); document.write( "You have no choice but to take the log of both sides: \n" ); document.write( "x(log(3.5)) = log(47.9) \n" ); document.write( "---- \n" ); document.write( "x = log(47.9)/(log(3.5)) \n" ); document.write( "---- \n" ); document.write( "x = 3.0885 \n" ); document.write( "------ \n" ); document.write( "Unless you use a slide rule of log tables you cannot \n" ); document.write( "get this answer without a calculator. \n" ); document.write( "---- \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "============= \n" ); document.write( " |