PLEASE HELP I KNOW I DONT HAVE THAT MUCH POINTS BUT NOBODY HAS HELPED ME WITH THIS :C I'LL GIVE BRAINLIEST 5 STARS AND A THANKS ITS DUE SOON SO THANKS IF U HELPED :C

Which is a true statement about an exterior angle of a triangle a. it is formed by two segments that are not sides of the triangle, b. it forms a linear pair with one of the interior angles of the triangle, c. it is complementary to one of the interior angles of the triangle. d. it is formed by two segments that are sides of the triangle.

An alternative to car buying is to make monthly payments for a period of time, and then return the vehicle to the dealer, or purchase it. this is called

The? half-life of a radioactive substance is 20 years. if you start with some amount of this? substance, what fraction will remain in 120 ? years