document.write( "Question 943687: One side of triangle is 3 times the shortest side. The third side is 20 feet more than the shortest side. The perimeter is 90. Find all three sides.
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Algebra.Com's Answer #575505 by rheak(1)\"\" \"About 
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In a triangle there are 3 sides so that would mean 3 variables.\r
\n" ); document.write( "\n" ); document.write( "\"One side of triangle is 3 times the shortest side. The third side is 20 feet more than the shortest side.\" <--- That is what you said and because of this information we can label our variables.\r
\n" ); document.write( "\n" ); document.write( "Shortest side is x
\n" ); document.write( "Second side is \"3 times the shortest side\" so it would be 3x
\n" ); document.write( "The third side is \"20 feet more than the shortest side\" so it would be x+20\r
\n" ); document.write( "\n" ); document.write( "We know that the perimeter or all of the sides add up to 90 so that would be your equation.\r
\n" ); document.write( "\n" ); document.write( "x+3x+x+20=90 (Simplify)
\n" ); document.write( " 5x+20=90 (Subtract)
\n" ); document.write( " 5x=70 (Divide)
\n" ); document.write( " x=14\r
\n" ); document.write( "\n" ); document.write( "So your shortest side would be 14.
\n" ); document.write( "The second side would be 14x3 which is 42.
\n" ); document.write( "The third side is 14+20 which is 34.\r
\n" ); document.write( "\n" ); document.write( "Add them up and they should equal 90.\r
\n" ); document.write( "\n" ); document.write( "Hope I helped.\r
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