document.write( "Question 200246: HI all, I need some help with the following problems. I dont expect answers to all of them, but if someone can give me 1 or more with explanations that would be great. I need to Solve the following 3 seperate equations for x
\n" );
document.write( "1. x = 2^x+1 = 27
\n" );
document.write( "2. x = 4x+2 = 256
\n" );
document.write( "3. x = 42x+2 = 256\r
\n" );
document.write( "\n" );
document.write( "All 3 are seperate and need seperate answers, if someone an give me some help il be very gratefull.
\n" );
document.write( "-Nick \n" );
document.write( "
Algebra.Com's Answer #150603 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! Solve the following 3 separate equations for x \n" ); document.write( ": \n" ); document.write( "Assume you mean \n" ); document.write( ": \n" ); document.write( "1. \n" ); document.write( "2^x + 1 = 27 \n" ); document.write( "2^x = 27 - 1 \n" ); document.write( "2^x = 26 \n" ); document.write( "using nat logs \n" ); document.write( "ln(2^x) = ln(26) \n" ); document.write( "use the log equiv of exponents \n" ); document.write( "x*ln(2) = ln(26) \n" ); document.write( ".693x = 3.358 \n" ); document.write( "x = \n" ); document.write( "x = 4.7 \n" ); document.write( ": \n" ); document.write( "Check solution on calc; enter: \n" ); document.write( "2^4.7 + 1 = 26.99 ~ 27 \n" ); document.write( ": \n" ); document.write( ": \n" ); document.write( "2. \n" ); document.write( " 4x + 2 = 256 \n" ); document.write( "4x = 256 - 2 \n" ); document.write( "4x = 254 \n" ); document.write( "x = \n" ); document.write( "x = 63.5 \n" ); document.write( ": \n" ); document.write( "Check solution on a calc, enter \n" ); document.write( "4(63.5) + 2 = 256 \n" ); document.write( ": \n" ); document.write( ": \n" ); document.write( "3. \n" ); document.write( "42x + 2 = 256 \n" ); document.write( "42x = 256 - 2 \n" ); document.write( "42x = 254 \n" ); document.write( "x = \n" ); document.write( "x = 6 \n" ); document.write( ": \n" ); document.write( "Check solution on a calc; decimal x = 6.0761 \n" ); document.write( "42(6.04761) + 2 = 255.999 ~ 256 \n" ); document.write( " |