Question

if a triangle has two equal sides and each 4m less then three times the third side. Find the dimensions of the triangle,if its perimeter is 55cm.
please help me .I will mark u as the brainlist​

Answer 1

Answer:

dimensions are 23, 23 ,9

Step-by-step explanation:

3rd side = length "x"

2 side lengths = 3x - 4.

3x - 4 + 3x - 4 + x = 55

7x - 16 = 55

7x -16 + 16 = 55 + 16

7x = 63

7x/7 = 63/7

x = 9

substitute value of "x" in 3x - 4,

3x - 4

3(9) - 4

27 - 4

23

hence the dimensions of triangle are 23, 23, 9

Answer 2

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If a triangle has two equal sides and each 4m less then three times the third side. Find the dimensions of the triangle, if its perimeter is 55m.

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Let the third side = x

Then, the equal sides = 3x-4

Perimeter = Sum of all sides

55 m = x + (3x-4) + (3x-4)

55 = x+3x-4+3x-4

55 = 7x-8

55+8 = 7x

63 = 7x

x = 63/7

x = 9

Equal sides = 3×9-4

Equal sides = 23 m

Third side = 9 m

[Note : In the question, you have done a typing mistake and mentioned different units for sides (m) and perimeter (cm), so I took metre as the unit but you can check and use any of the units]