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Write an expression that represents the perimeter of triangle.
Combine like terms.
3.x
3x
15
Perimeter of triangle:
If the perimeter of the triangle is 90, what is the value of x?

Write an expression that represents the perimeter of triangle Combine like terms 3x 3x 15 Perimeter of triangle If the perimeter of the triangle is 90 what is t class=

Respuesta :

adioabiola

The value of x is 12.5

A triangle has 3 sides: side A, side B and side C

Perimeter of a triangle = side A + side B + side C

Side A = 3x

Side B = 3x

Side C = 15

Perimeter of a triangle = 90

Perimeter of a triangle = side A + side B + side C

90 = 3x + 3x + 15

90 - 15 = 3x + 3x

75 = 6x

x = 75 / 6

x = 12 3/6

x = 12 1/2

= 12.5

x = 12.5

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