document.write( "Question 99922: one side of a triangle is a. the second side is 4 more than half of a and the third side is 7 less than twice a.
\n" ); document.write( "a. write an expression for the length of second side in terms of a.
\n" ); document.write( "b. write an expression for the length of the third side in terms of a.
\n" ); document.write( "c. find the perimeter if a = 3
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Algebra.Com's Answer #72733 by doukungfoo(195)\"\" \"About 
You can put this solution on YOUR website!
write expression for length of second side in terms of a
\n" ); document.write( "Given: second side is 4 more than half of a
\n" ); document.write( "so the expression would be
\n" ); document.write( "\"SecondSide=4%2B%281%2F2%29a\" or
\n" ); document.write( "\"SecondSide=4%2Ba%2F2\"
\n" ); document.write( "next
\n" ); document.write( "write an expression for the length of the third side in terms of a
\n" ); document.write( "Given: the third side is 7 less than twice a
\n" ); document.write( "\"ThirdSide=2a-7\"
\n" ); document.write( "last
\n" ); document.write( "find the perimeter if a = 3
\n" ); document.write( "Known: perimeter of a triangle equals the sum of all its sides
\n" ); document.write( "\"perimeter=a%2B%284%2Ba%2F2%29%2B%282a-7%29\"
\n" ); document.write( "\"perimeter=3%2B%284%2B3%2F2%29%2B%282%283%29-7%29\"
\n" ); document.write( "\"perimeter=3%2B%284%2B1%261%2F2%29%2B%286-7%29\"
\n" ); document.write( "\"perimeter=3%2B5%261%2F2-1\"
\n" ); document.write( "\"perimeter=7%261%2F2\" or
\n" ); document.write( "\"perimeter=7.5\"\r
\n" ); document.write( "\n" ); document.write( "Note: this is how the math works but with the given information a=3 there is a problem. If a=3 then the third side which is 2a-7 would result in the third side being -1. There can be no triangle with this measurement.
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