Find the perimeter of the triangle. Assume that lines which appear to be tangent are tangent. Round answer to the nearest tenth.
7.4
7.3
18.3

According to modern science, earth is about 4.5 billion years old and written human history extends back about 10,000 years. suppose the entire history of earth is represented with a 10-meter-long timeline, with the birth of earth on one end and today at the other end.

What is an alternate exterior angle

9/10 divide by -3/15 as a mixed number