Answer:
1) x = 12.0; y = 19.6
Explanation:
Answer choices:
1) x = 12.0; y = 19.6
2) x = 23.0; y = 12.0
3) x = 19.6; y = 12.0
4) x = 12.0; y = 23.0
OB and OA are radii. All radii in the same circle (or congruent circles) are congreunt. One radius is 12.
Therefore, all other radii are 12.
OB is a radius- therefore OB (x) = 12
x = 12
The answer choices with x as 12 are 1 and 4.
1) x = 12.0; y = 19.6
4) x = 12.0; y = 23.0
AC and BC look to be tangents- tangents to a circle from a point are congruent.
Therefore, AC is congruent to BC.
BC (y) = 19.6
y= 19.6
Answer choice: 1) x = 12.0; y = 19.6