document.write( "Question 979803: whats 8^-x/50=2
\n" ); document.write( "whats x equal? round answer to 4 decimal places \n" ); document.write( "

Algebra.Com's Answer #601049 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
Is this the equation:
\n" ); document.write( " $\"+8%5E%28%28-x%29%29+%2F+50+=+2+\"$
\n" ); document.write( "If so,
\n" ); document.write( "Multiply both sides buy $\"+50+\"$
\n" ); document.write( " $\"+8%5E%28%28-x%29%29+=+100+\"$
\n" ); document.write( "I can multiply both sides by $\"+8%5Ex+\"$
\n" ); document.write( " $\"+8%5E%28%28-x%29%29%2A8%5E%28x%29+=+100%2A8%5Ex+\"$
\n" ); document.write( " $\"+8%5E%28%28-x%2Bx%29%29+=+100%2A8%5Ex+\"$
\n" ); document.write( " $\"+100%2A8%5Ex+=+1+\"$
\n" ); document.write( " $\"+8%5Ex+=+10%5E%28-2%29++\"$
\n" ); document.write( "Take the log of both sides
\n" ); document.write( " $\"+log%28%28+8%5Ex+%29%29+=+-2+\"$
\n" ); document.write( " $\"+x%2Alog%28%288%29%29+=+-2+\"$
\n" ); document.write( " $\"+x+=+-2%2Flog%288%29+\"$
\n" ); document.write( "--------------------
\n" ); document.write( "check:
\n" ); document.write( " $\"+log%28%288%29%29+=+.90309+\"$
\n" ); document.write( " $\"+x+=+-2%2F.90309+\"$
\n" ); document.write( " $\"+x+=+-2.2146+\"$
\n" ); document.write( " $\"+8%5E%28%28-x%29%29+%2F+50+=+2+\"$
\n" ); document.write( " $\"+8%5E%28%28-%28-2.2146%29%29%29+%2F+50+=+2+\"$
\n" ); document.write( " $\"+8%5E2.2146+=+100+\"$
\n" ); document.write( " $\"+99.9961+=+100+\"$
\n" ); document.write( "error due to rounding off
\n" ); document.write( " \n" ); document.write( "

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