Question

What is the value of y?

Answer 1

D. 68 degrees

Explanation:

Remember, the total degree of a triangle is 180 degrees, not 360 like a rectangle.

To solve, set up an equation.

`y+(y-12)+56=180`

Solve:

`2y+44=180`

Subtract 44 from both sides

`2y=136`

Divide both sides by 2

y=68

I hope this helps!

Answer 2

68

Explanation:

The sum of the angles of a triangle add to 180

y + y-12 +56 = 180

Combine like terms

2y+ 44 = 180

Subtract 44 from each side

2y+44 = 180-44

2y = 136

Divide by 2

2y/2 = 136/2

y = 68