document.write( "Question 1148506: In the diagram, BE= 45cm and AC=DC. Find the length of BC, in cm. \r
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Algebra.Com's Answer #769868 by josgarithmetic(39617)\"\" \"About 
You can put this solution on YOUR website!
From your diagram,
\n" ); document.write( "let h=AC=DC
\n" ); document.write( "let x=BC
\n" ); document.write( "and then 45-x=CE.\r
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\n" ); document.write( "\n" ); document.write( "Two right triangles. You want to find BC, or x.\r
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\n" ); document.write( "\n" ); document.write( "\"system%2818%5E2%2Bx%5E2=h%5E2%2C%2845-x%29%5E2%2B20%5E2=h%5E2%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"18%5E2%2Bx%5E2=%2845-x%29%5E2%2B20%5E2\"------------simplify and solve for x.
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