The temperature at 6 A. M. is -12° F. During the next twelve hours, the temperature increases 25° F. What is the new temperature?
(help please!!!)

According to modern science, earth is about 4.5 billion years old and written human history extends back about 10,000 years. suppose the entire history of earth is represented with a 10-meter-long timeline, with the birth of earth on one end and today at the other end.

If the discriminant if a quadratic equation is 4 which statement describes the roots?

What is the missing reason in the proof? segment addition congruent segments theorem transitive property of equality subtraction property of equality?