zarakhanforeva zarakhanforeva

24-06-2018
Mathematics

contestada

Plz help with this question and explain

Plz help with this question and explain class=

Respuesta :

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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