Staceyrycz1761 Staceyrycz1761

26-01-2018
Mathematics

contestada

Two sides of a triangle have the same length. the third side measures 7 m less than twice the common length. the perimeter of the triangle is 13 m. what are the lengths of the three sides?

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frenchiegirl frenchiegirl

28-01-2018

hello

2 côtés = 2 x

3 ème côté = 4 x - 7

2 x + 4 x - 7 = 13
6 x = 13 + 7
6 x = 20
x = 20/6 = 10/3 m

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