zarakhanforeva
zarakhanforeva zarakhanforeva
  • 24-06-2018
  • Mathematics
contestada

Plz help with this question and explain

Plz help with this question and explain class=

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harpazo
harpazo harpazo
  • 24-06-2018
I see two lines. The degree measure of any line is 180°.

4y + 5y = 180°

9y = 180°

y = 180°/9

y = 20
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