Answer:
The answer is 150
Step-by-step explanation:
 
        
             
        
        
        
Answer:
Use the slope formula to find the slope of a line given the coordinates of two points on the line. The slope formula is m=(y2-y1)/(x2-x1), or the change in the y values over the change in the x values. The coordinates of the first point represent x1 and y1. The coordinates of the second points are x2, y2.
Step-by-step explanation:
 
        
             
        
        
        
Answer:

Step-by-step explanation:
So we know that: 

To reflect across the <em>y-axis</em>, instead of x, use -x. Therefore: 

Simplify: 

And that's our answer :)
 
        
             
        
        
        
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
 
        
             
        
        
        
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