Answer:
<h3>x = 5</h3>
Step-by-step explanation:
f(x) = 2(x + 6)
f(x) = 22
thereofre we have the equation:
2(x + 6) = 22      <em>use distributive property</em>
2x + 12 = 22     <em>subtract 12 from both sides</em>
2x = 10     <em>divide both sides by 2</em>
x = 5
 
        
             
        
        
        
Answer:
Step-by-step explanation:
4. 10x + 30 = 90
     10x = 60
      x = 6
    complementary
5. 4x + 40 + 3x = 180
    7x + 40 = 180
    7x = 140
     x = 20
    supplementary
 
        
             
        
        
        
HOPE THIIIISSS HELLLPSSSS
 
        
        
        
The measure of the Central Angle indicated is; 45°
<h3>How to find the central angle of a circle?</h3>
The central angle will be the angle subtended at the center by arc FE and arc CB.
Now, we see that angle ∠FOB = 135° and since we know that sum of angles on a straight line is 180°, then we can say that;
Central Angle = 180° - 135° = 45°
Angle subtended by Arc CD at the center is;
θ = 180 - (81 + 45)
θ = 54°
Read more about Central Angle at; brainly.com/question/17074363
#SPJ1