Help me with this please :)

Aregular polygon has angkes of size 150° each.how many side has the polygon

Science and technology are interdependent. advances in one lead to advances in the other. give an example of this phenomenon.

Which statement correctly describes a step-up transformer? a. it increases the amount of electric energy available. b. it increases the voltage of an electric current. c. it changes direct current into alternating current. d. it has more loops of wire in its primary coil.