Respuesta :

renknee

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.

  • [tex](y+y)+(60)=180[/tex]
  • [tex]2y + 60 = 180[/tex]

Step 2: Subtract 60 from both sides.

  • [tex]2y + 60 - 60 = 180 - 60[/tex]
  • [tex]2y = 120[/tex]

Step 3: Divide both sides by 2.

  • [tex]\frac{2y}{2}=\frac{120}{2}[/tex]
  • [tex]y = 60[/tex]

Step 4: Check if solution is correct.

  • [tex](60)+(60)+60 = 180[/tex]
  • [tex]120 + 60 = 180[/tex]
  • [tex]180 = 180[/tex]

Therefore, the answer is B. 60°.

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