document.write( "Question 1183731: Solve an equation to find the length ofAB and BC.
\n" ); document.write( "B is between A and C. AB = x, BC = 2x, AC = 18 \n" ); document.write( "

Algebra.Com's Answer #814176 by ikleyn(52803) $\"\"$ $\"About$

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\n" ); document.write( "Solve an equation to find the length ofAB and BC.
\n" ); document.write( "B is between A and C. AB = x, BC = 2x, AC = 18
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document.write( "Since B is between A and C, we have\r\n" );
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document.write( "    AB + BC = AC\r\n" );
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document.write( "     x + 2x = 18\r\n" );
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document.write( "      3x    = 18\r\n" );
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document.write( "       x    = 18/3 = 6.\r\n" );
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document.write( "ANSWER.  AB = 6 units;  BC = 2*6 = 12 units.\r\n" );
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