It takes Sage 0.25 hours to drive to school. Her route is 6.2 miles long. What is Sage's average speed on her drive to school? DO NOT INCLUDE UNITS. ONLY WRITE THE NUMBER.

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.

If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?

Could we see a galaxy that is 20 billion light-years away?