document.write( "Question 1201676: If s is inversely proportional to the square root of t , than if s=28 and t=64 , find:
\n" ); document.write( "a) S when t=81
\n" ); document.write( "b) t when s=60 \r
\n" ); document.write( "\n" ); document.write( "28=k/√64 and therefore k=224\r
\n" ); document.write( "\n" ); document.write( "a) I have no difficulty in letter a (s=224/√81=24.9) but ..\r
\n" ); document.write( "\n" ); document.write( "b) 60=224/√t
\n" ); document.write( " t=√(224/60)=1.93
\n" ); document.write( "But the answer on my book is 13.94 (letter b )
\n" ); document.write( "How is letter b worked out ?
\n" ); document.write( " \n" ); document.write( "

Algebra.Com's Answer #836377 by MathTherapy(10555) $\"\"$ $\"About$

You can put this solution on YOUR website!

\r\n" );
document.write( "If s is inversely proportional to the square root of t , than if s=28 and t=64  , find: \r\n" );
document.write( "a) S when t=81\r\n" );
document.write( "b) t when s=60 \r\n" );
document.write( "\r\n" );
document.write( "28=k/√64  and therefore k=224\r\n" );
document.write( "\r\n" );
document.write( "a) I have no difficulty in letter a  (s=224/√81=24.9) but ..\r\n" );
document.write( "\r\n" );
document.write( "b)  60=224/√t\r\n" );
document.write( "     t=√(224/60)=1.93\r\n" );
document.write( "But the answer on my book is  13.94  (letter b ) \r\n" );
document.write( "How is letter b  worked out ?\r\n" );
document.write( "\r\n" );
document.write( "s is inversely proportional to the square root of t, so that gives us: , so \"28 = k/√64\" is CORRECT,\r\n" );
document.write( "and therefore k = 224 (8 * 28)\r\n" );
document.write( "\r\n" );
document.write( "a) I have no difficulty in letter a  (s=224/√81=24.9) but ..\r\n" );
document.write( "\r\n" );
document.write( "b) t when s=60 \r\n" );
document.write( "\r\n" );
document.write( "b)  60 = 224/√t\r\n" );
document.write( "     t = √(224/60)=1.93 <==== This is where you're WRONG!. I think you got a little confused.\r\n" );
document.write( "You seem to have taken the square root of  instead of SQUARING it! You need to APPLY the INVERSE\r\n" );
document.write( "operation here, and the INVERSE of taking the square root is squaring!\r\n" );
document.write( "\r\n" );
document.write( "In other words, \r\n" );
document.write( "               ------- Cross-multiplying\r\n" );
document.write( "                \r\n" );
document.write( "              ---- Squaring BOTH sides\r\n" );
document.write( "                  \r\n" );
document.write( "\r\n" );
document.write( "NEVER, EVER, EVER, EVER round prematurely like the other person did! Most times when you do, your answer will be\r\n" );
document.write( "different from the correct answer! Furthermore, he's still WRONG, since

\n" ); document.write( "

\n" );