<span>largest and most populous island of Cabo Verde, in the Atlantic Ocean, about 400 miles (640 km) off the West African coast. The land rises to its highest elevation at Antónia Peak, 4,566 feet (1,392 metres) above sea level. Santiago is Cabo Verde’s most...</span>
Industrialisation. Or that's what I think
Answer:
x=20
Explanation:
3x-10+5x+30=180 (co-interior angles=180)
8x+20=180
8x=160
x=20