Hi, glad to help u.
so, complimentary angles means two adjacent angles measured as a right angle which means two angles measured as 90 degrees!
So 7x-3 and x+13 is a pair of complimentary angles.
Then we can know(
(7x-3)+(x+13)=90
8x+10=90
x=10
so 7x-3=67
x+13=23
hope that helps u
With South Americas Rain forest , it produces 20% of the earths oxygen. Also many drugs used to treat people have come the plants of Amazon. The worlds climate would be much different because ocean currents would be different . Europe would not have the warmth of the North Atantic drift current to keep it warm. It would be more like Siberia .It is located primarily in the southern hemisphere. It is bordered by the Atlantic Ocean to the east and the Pacific Ocean to the west. The geography of South America is dominated by the Andes Mountain Range and the Amazon River (second longest river in the world).Andes Mountains. The Andean Mountains, or Andes, stretch for nearly 7,000 km across the continent, from the top to the bottom. ...
Amazon Basin. ...
Atacama Desert. ...
Brazilian Highlands.
Isla Grande de Tierra del Fuego. ...
Marajó
Where they came from, how deep in the earth they were, how old they might be, the weathering that has taken place
They built temples tombs pyramids and much more
The northern coast is primarily agricultural while the Southern coast has a thriving tourism industry.