whats the perimeter of a triangle as as simplified expression of 2x-5,5-x,3x-2

Question

whats the answer

 

Answer 1

if these expression represent side lengths, then you simply add those three expressions, and that's the perimeter.

 

I explore this idea a bit. obviously x < 5 (because 5-x has to be positive.

2x-5 > 0 is a requirement, also, so x > 2.5 is required.

 

 

Answer 2

Perimeter of triangle = sum of lengths of the three sides

 

If the three sides are (2x-5), (5-x), and (3x-2), then:

  Perimeter = (2x-5) + (5-x) + (3x-2)

                 =  2x - 5 + 5 - x + 3x - 2

                 =  4x - 2

Answer 3

Perimeter (more exactly semi-perimeter) of a triangle is calculated as

p=(1/2)(a+b+c), where a,b,c are (length) of the triangle sides.

So, in your question

p=(1/2)(2x-5+5-x+3x-2 )=(1/2)(4x-2)=2x-1