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Two sides of a triangle have the same length. The third side measures 3 m less than twice the common length. The perimeter of the triangle is 17 m. What are the lengths of the three sides? What is the length of the two sides that have the same length? m

Respuesta :

Let the common sides have length x, i.e, we have 2 sides measuring x

the third side would measure 2x - 3.

The perimeter = x + x + 2x - 3 = 4x - 3 = 17

so, 4x = 17 + 3 ,

4x = 20

x = 20/4 = 5m

Therefore, the three sides are 5m , 5m and 2( 5 )-3 = 10 - 3 = 7m

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