Question

Write the perimeter of the triangle as a

simplified expression.
3y + 5
бу
Y-4

Answer 1

10y+1

Explanation:

The perimeter is the three sides added together

3y+5+6y+y-4=

10y+1

Answer 2

`\huge\boxed{P_\triangle=10y+1}`

Explanation:

The formula of a perimeter of a triangle:

`P_\triangle=a+b+c`

We have:

`a=3y+5,\ b=6y,\ c=y-4`

Substitute:

`P_\triangle=(3y+5)+(6y)+(y-4)=3y+5+6y+y-4`

Combine like terms:

`P_\triangle=(3y+6y+y)+(5-4)=10y+1`