a triangle is such that the first side is twice the length of the second side, the third side is 4m long if the perimeter of the triangle is 13m find the length of the first and second sides.
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Answer: 6m and 3m
Explanation:
Let first side be x, and second side be y
From the first statement we know
x = 2y
From the second statement we know
x + y + 4 = 13 ⇒ x + y = 9
⇒ 2y + y = 9 ;(Replaced x with 2y)
⇒ y = 9/3 = 3
From first equation
x = 2y = 2×3 = 6
Hope it helped
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