Answer:

Step-by-step explanation:
According to congruent chords and arcs theorem, if
then
.
This means that
Thus:
(full circle = 360°)



Plug in the values into the equation


Add like terms

Subtract 36 on both sides


Divide both sides by 12

R/9 = -21
Multiply by 9
r = -189
Answer:
-9
Step-by-step explanation:
-3(2) + (-3)
-6 + (-3)
-9
Notice the grid, the points are (-5, -2) and (4, -1), thus
Answer:
C
Step-by-step explanation:
Start from left to right