an isosceles triangle has a perimeter of in. the congruent sides measure (2x+9)cm. The length of the third side is 3 x cm. what is the value of x?

What is the perimeter?

an isosceles triangle has a perimeter of 60 in. the congruent sides measure (2x+9)cm. The length of the third side is 3x cm. what is the value of x?

Again...sorry. = )

How do you think you should solve this problem?

I really have no idea. I am more confused with every question.

Are you sure that the perimeter is 60 inches?

2(2x + 9) + 3x = 60

Solve for x.

If the perimeter is 90 inches, forget the solution I posted above.

19.2 cm?

x = 19.2cm? (the perimeterr is 60 in.)

Substitute 19.2 for x and see if it works.

It does...right? Oh Lord...