asan7701 asan7701

16-03-2021
Mathematics

contestada

Write an equation that represents the perimeter of triangle. Combine like terms.
Shows a equilateral triangle with 3x on both top sides and 15 on the bottom.
Perimeter of triangle:
If the perimeter of the triangle is 90, what is the value of x?
x+

Respuesta :

mathstudent55 mathstudent55

16-03-2021

Answer:

x = 12.5

Step-by-step explanation:

The three sides of the triangle have lengths 3x, 3x, and 15.

The perimeter of the triangle is the sum of the three lengths, and it is 90.

Perimeter = 3x + 3x + 15 = 6x + 15

3x + 3x + 15 = 90

6x + 15 = 90

6x = 75

x = 12.5

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