Find the measure of the missing angles.
83°C
b

Step-by-step explanation:

Vertical angles are angles on opposites sides of an intersection of two lines. Therefore, and are vertical angles. Similarly, the angle opposite to the angle marked 83 degrees is also equal to 83 degrees. Vertical angles are always equal.

Since there are 360 degrees in a circle, we have the following equation:

Since and are vertical angles and vertical angles are also equal, the measure of angle is also

-13

step-by-step explanation:

f(x)=2x-5 for f(-4)

f(-4)   means let x=-4

f(-4) = 2(-4) -5

f(-4) =-8-5

      = -13