The answer is 3.814 but if you wanna round to the nearest hundredth then it’s 3.81
X=70, y=55
The triangle is an isosceles triangles. In an isosceles triangle, the base angles are congruent.
Then use the triangle angle sum theorem and set the equation to 180.
55+55+x=180
110+x=180
x=70
The angle with 55 degrees and the angle with the variable y are alternate angles. Meaning they are congruent.
Your good its 80 one way you can always tell if its a triangle is if all the angles add up to 180
Answer:
Step-by-step explanation:
1. Distribute the X across the equation: 
2.
3.
3.
The full answer is 28.421856
