Respuesta :

Answer:

x = - 7

Step-by-step explanation:

Sum of interior angles is a triangle is 180,

70 + 55 + 62 + x = 180

187 + x = 180

x = 180 - 187

x = - 7

renknee

Answer:

C) -7

Step-by-step explanation:

1. All the angles in a triangle add up to 180°. This means that x + 62 + 70 + 55 = 180.

2. (Solving equation above)

Step 1: Combine like terms.

  • [tex](x)+(62+70+55)=180[/tex]
  • [tex]x+(132+55)=180[/tex]
  • [tex]x + 187=180[/tex]

Step 2: Subtract 187 from both sides.

  • [tex]x+187-187=180-187[/tex]
  • [tex]x = -7[/tex]

Step 3: Check if solution is correct.

  • [tex]-7+62+70+55=180[/tex]
  • [tex]55+70+55=180[/tex]
  • [tex]125+55=180[/tex]
  • [tex]180=180[/tex]

Therefore, the answer is C) -7.

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