Question

If the perimeter of this triangle is 15 centimeters, what is the value of n

Answer 1

Answer:

n = 5/2

Step-by-step explanation:

Add all of the sides up to make an equation

(5n - 6) + n + (2n + 1) = 15

8n -5                          = 15

8n  =  20

n    = 5/2

Answer 2

Answer:

$0.4cm$

Step-by-step explanation:

$n + 2n+1 + 5n-6 = 15$

$8n -5 = 15$

$8n = 20$

$n = \frac{8}{20}$

$n = 0.4$

$\therefore$ the value of $n$ is $0.4cm$

Hope this helps :)