When a bottle is 1/2 filled with water, it weighs 2.6kg. the bottle weighs 4kg when it is full. find the weight of the empty bottle.

Use the elimination method to solve the system of equations -x+5y=-4 and 4x+3y=16

What is the solution of sqrt x+2-15=-3

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.