Question

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

Answer 1

n = 5/2

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

`0.4cm`

Explanation:

`n + 2n+1 + 5n-6 = 15\\`

`8n -5 = 15`

`8n = 20`

`n = (8)/(20)`

`n = 0.4`

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

Hope this helps :)