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35 votes
35 votes
What is the value of y?

What is the value of y?-example-1
User Dhamo
by
2.5k points

2 Answers

9 votes
9 votes

Answer:

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!

User Phil Freeman
by
2.9k points
11 votes
11 votes

Answer:

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

User Tatoline
by
2.7k points