Question

I know to find the perimeter you have to add all side lengths but how would you find the perimeter if this triangle?

Answer 1

.

Answer 2

perimeter of the triangle is P = a+b+c
where:
a,b and c are the lengths of each side of the triangle

Answer 3

Add the sides like you normally would. 5w + (-2w +15) + (w - 7)

Answer 4

And combine like terms

Answer 5

so let a = (w-7)
b = (-2w+15)
c = (5w)

P = (w-7)+(-2w+15)+5w
and combine like terms... wow mine is backwards. I wonder if order matters ?

Answer 6

no order does not matter

Answer 7

[5w+w-7-2w+15]in
=[4w+8]in