document.write( "Question 1043584: I have worked out the quadratic equation for
\n" ); document.write( "x= -3q^2+150q, where q is quantity. The question asks what is the quantity is if x = 150? So I'm basically being asked what is q? I got:\r
\n" ); document.write( "\n" ); document.write( "q= 5(5 - radical 7) / 3 , q= 5(5 + radical 7) / 3
\n" ); document.write( "q=3.92375, q=12.74292.
\n" ); document.write( "But I don't know if that's the final answer to the question, or do I have to pick one of those two decimals? \n" ); document.write( "
Algebra.Com's Answer #658728 by Edwin McCravy(20056)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "Apparently you made a mistake with the quadratic formula:\r\n" );
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document.write( "x = -3q2+150q \r\n" );
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document.write( "substitute 150 for x\r\n" );
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document.write( "150 = -3q2+150q\r\n" );
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document.write( "Get 0 on the right side:\r\n" );
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document.write( "3q2-150q+150 = 0\r\n" );
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document.write( "To make it easier to solve, divide every \r\n" );
document.write( "term on both sides by 3 -- since you can!:\r\n" );
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document.write( "q2-50q+50 = 0\r\n" );
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document.write( "a=1, b=-50, c=50\r\n" );
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document.write( "\"q+=+%28-b+%2B-+sqrt%28+b%5E2-4ac+%29%29%2F%282a%29+\"\r\n" );
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document.write( "\"q+=+%28-%28-50%29+%2B-+sqrt%28%28-50%29%5E2-4%281%29%2850%29+%29%29%2F%282%281%29%29+\"\r\n" );
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document.write( "\"q+=+%2850+%2B-+sqrt%282500-200%29%29%2F2+\"\r\n" );
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document.write( "\"q+=+%2850+%2B-+sqrt%282300%29%29%2F2+\"\r\n" );
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document.write( "\"q+=+%2850+%2B-+sqrt%28100%2A23%29%29%2F2+\"\r\n" );
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document.write( "\"q+=+%2850+%2B-+10sqrt%2823%29%29%2F2+\"\r\n" );
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document.write( "\"q+=+%2810%285+%2B-+sqrt%2823%29%29%29%2F2+\"\r\n" );
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document.write( "\"q+=+%28%22%22%5E5cross%2810%29%285+%2B-+sqrt%2823%29%29%29%2Fcross%282%29+\"\r\n" );
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document.write( "\"q+=+5%285+%2B-+sqrt%2823%29%29+\"\r\n" );
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document.write( "\"q+=+5%285+%2B+sqrt%2823%29%29+\" and \"q+=+5%285+-+sqrt%2823%29%29+\"\r\n" );
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document.write( "\"q+=+48.97915762\" and \"q+=+1.020842383\"\r\n" );
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document.write( "Both answer are correct, so give them both.  You should\r\n" );
document.write( "try to find out where you went wrong, so that you won't \r\n" );
document.write( "make the same mistake in other problems.\r\n" );
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document.write( "Edwin
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