Answer:
4x + (5x+18) = 180-81=99
9x+18=99
9x=99-18=81
x=9
Step-by-step explanation:
Option C:
The measure of arc CD is 40°.
Solution:
Given data:
m∠X = 11° and m(arc AB) = 18°
To find the measure of arc CD:
We know that,
<em>Angle formed by two intersecting secants outside the circle is equal to half of the difference between the intercepted arcs.</em>


Multiply by 2 on both sides.
22° = arc CD - 18°
Add 18° from both sides.
40° = arc CD
Switch the sides.
arc CD = 40°
Hence the measure of arc CD is 40°.
Option B is the correct answer.
Answer:
x = 2
Step-by-step explanation:
Set the equations equal to each other
x + 2 = -3x + 10
+ 3x + 3x Add 3x to both sides
4x + 2 = 10
- 2 - 2 Subtract 2 from both sides
4x = 8 Divide both sides by 4
x = 2
If this answer is correct, please make me Brainliest!
x= 7/13. Hope I helped you !!!!