document.write( "Question 81971: Triangle ABC is an isosceles triangle with vertex angle B, AB = 5x - 28, AC = x + 5, and BC = 2x + 11. Find the length of the base. \n" ); document.write( "
Algebra.Com's Answer #66848 by psychopsibilin(3)\"\" \"About 
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Since vertex angle is B, we can safely say that AB=BC in this isosceles triangle.
\n" ); document.write( "hence 5x-28 = 2x+11
\n" ); document.write( "0r 3x = 39, hence x = 13
\n" ); document.write( "Now AC = x+5 = 18\r
\n" ); document.write( "\n" ); document.write( "Hence length of base = 18 units
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