Which value is an extraneous solution x=-3x+12

A3x4x5 rectangular cuboid (e. g. a brick) is painted blue and cut into 1x1 cubes. what is the expected value for the painted sides of a randomly selected cube?

What is the difference between the points (4, 7) and (4, -5)? a. 0 units b. 2 units c. 4 units d. 12 units

He that is measured at 220° is a reflex angle. the opposite angle is obtuse. find the measure of obtuse .