Solve equations with unknown variable
.25x = 12

#1-20 state whether the angles are alternate interior, alternate exterior, vertical, or corresponding angles.

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a. m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?