SOLUTION: A leather coin purse has the shape of a triangle. Two sides are equal in length and the third side is 3 centimeters shorter than one-half times the length of the equal sides. The p

Algebra ->  Equations -> SOLUTION: A leather coin purse has the shape of a triangle. Two sides are equal in length and the third side is 3 centimeters shorter than one-half times the length of the equal sides. The p      Log On


   

Question 365951: A leather coin purse has the shape of a triangle. Two sides are equal in length and the third side is 3 centimeters shorter than one-half times the length of the equal sides. The perimeter is 28.5 centimeters. Find the lengths of the sides.
Answer by mananth(16946) About Me  (Show Source):
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A leather coin purse has the shape of a triangle. Two sides are equal in length and the third side is 3 centimeters shorter than one-half times the length of the equal sides. The perimeter is 28.5 centimeters. Find the lengths of the sides.
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let the equal sides be x
third side = x/2 -3 cm
x+x + 0.5x-3=28.5
2.5x=28.5+3
2.5x=31.5
/2.5
x= 12.6 equal side
third side = 0.5x-3
0.5 * 12.6 -3
=3.3 third side
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m.ananth@hotmail.ca