document.write( "Question 628177: 10/A = A/4.9 ? Ten over A equals A over 4.9
\n" ); document.write( "What is A? \n" ); document.write( "

Algebra.Com's Answer #395425 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"+10%2FA+=+A%2F4.9+\"$
\n" ); document.write( "Multiply both sides by $\"+4.9A+\"$
\n" ); document.write( " $\"+4.9A%2A%2810%2FA%29+=+4.9A%2A%28A%2F4.9%29+\"$
\n" ); document.write( "On the left side, the $\"A\"$ 's cancel
\n" ); document.write( "On the right side, the $\"+4.9+\"$ 's cancel
\n" ); document.write( " $\"+4.9%2A10+=+A%5E2+\"$
\n" ); document.write( " $\"+49+=+A%5E2+\"$
\n" ); document.write( "Take the square root of both sides
\n" ); document.write( " $\"+A+=+7+\"$
\n" ); document.write( "and, taking the negative square root of $\"A%5E2\"$
\n" ); document.write( " $\"+A+=+-7+\"$
\n" ); document.write( "---------
\n" ); document.write( "check the answers:
\n" ); document.write( " $\"+10%2FA+=+A%2F4.9+\"$
\n" ); document.write( " $\"+A+=+-7+\"$
\n" ); document.write( " $\"+10%2F%28-7%29+=+-7%2F4.9+\"$
\n" ); document.write( " $\"+-1.4286+=+-1.4286+\"$
\n" ); document.write( "OK
\n" ); document.write( " $\"+A+=+7+\"$ will check OK too \n" ); document.write( "

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