Question

question 1 of 10
what is the value of y?
a. 54°
b. 73°
c. 63°
d. 126°

Explanation:

Step1: Use the triangle - angle sum formula

The sum of the interior angles of a triangle is \(180^{\circ}\). So, \(y + y+54 = 180\).

Step2: Simplify the equation

Combine like terms: \(2y+54 = 180\).
Subtract 54 from both sides: \(2y=180 - 54\), so \(2y = 126\).

Step3: Solve for \(y\)

Divide both sides by 2: \(y=\frac{126}{2}=63\).

Answer:

C. \(63^{\circ}\)