Question

What is the value of y? Y Y 60 O A. 120° B. 60° C. 40° O D. 30°

Answer 1

Answer:

B. 60°

Step-by-step explanation:

1. The measure of all angles in a triangle sum up to 180°. This means that y + y + 60 = 120.

2. (Solving)

Step 1: Simplify both sides of the equation.

• $(y+y)+(60)=180$
• $2y + 60 = 180$

Step 2: Subtract 60 from both sides.

• $2y + 60 - 60 = 180 - 60$
• $2y = 120$

Step 3: Divide both sides by 2.

• $\frac{2y}{2}=\frac{120}{2}$
• $y = 60$

Step 4: Check if solution is correct.

• $(60)+(60)+60 = 180$
• $120 + 60 = 180$
• $180 = 180$

Therefore, the answer is B. 60°.