mgh65
mgh65
30-08-2019
Mathematics
contestada
Help me please thank you
Respuesta :
nancygeorge1975
nancygeorge1975
31-08-2019
Answer:
140°
Step-by-step explanation:
180°=(4x-20)+×
180° = 5x-20
200°=5x
x=40°
140°+40°=180°
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