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  • 05-04-2020
  • Mathematics
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wegnerkolmp2741o
wegnerkolmp2741o wegnerkolmp2741o
  • 05-04-2020

Answer:

D 60

Step-by-step explanation:

Fist we can determine y

7y+5y = 180  since it is a straight line

12y = 180

Divide each side by 12

12y/12 =180/12

y = 15

We also know that 5y+3y +x = 180  since the angles of a triangle add to 180

8y +x = 180

8*15 +x = 180

120+x = 180

Subtract 120 from each side

120-120+x = 180-120

x = 60

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