igawelap8749 igawelap8749

19-01-2021
Mathematics

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The length of the base of an isosceles triangle is X.

The length of the leg is 4x-7

The perimeter of the triangle is 121 find X

Respuesta :

sammyan07 sammyan07

20-01-2021

Answer:

15

Step-by-step explanation:

Substitute the values of the lengths and base in the formula for the perimeter

Perimeter = 2 (L) + b

121 = 2 (4x - 7) + x

121 = 8x - 14 + x

121 = 9x -14

121 + 14 = 9x

135 = 9x

x = 15

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