document.write( "Question 50578: The perimeter of an isosceles triangle is 40, and the base is 10. find the length of one of the equial sides. \n" ); document.write( "
Algebra.Com's Answer #33643 by mszlmb(115)\"\" \"About 
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\"The perimeter of an isosceles triangle is 40, and the base is 10. find the length of one of the equial sides.\"

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Perimeter=Base+Side+Side\r\n" );
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document.write( "Thence;\r\n" );
document.write( "40=B+S+S\r\n" );
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document.write( "We know S and S [two sides] are the same, because the triangle is an isosceles.\r\n" );
document.write( "The equation thence yields:\r\n" );
document.write( "40=B+2S\r\n" );
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document.write( "B is 10:\r\n" );
document.write( "40=10+2S   minus 10 to both sides\r\n" );
document.write( "30=2S      divide both sides by 2\r\n" );
document.write( "15=S\r\n" );
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document.write( "each side is 15. \r\n" );
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document.write( "let's check: \r\n" );
document.write( "2(15)+10=40\r\n" );
document.write( "30+10=40\r\n" );
document.write( "40=40 :-D it works.
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