Answer:
   x = 12
Step-by-step explanation:
Angle GHK is half of 120, so is 60. Then ...
   3x +24 = 60
   3x = 36 . . . . . subtract 24
   x = 12 . . . . . . . divide by 3
 
        
             
        
        
        
Answer:
Triangle & semicircle 
Step-by-step explanation:
 
        
             
        
        
        
Answer:
 y  = 8x + 3
Step-by-step explanation:
The line we are describing here is line p;
  slope of line p = 8 
   y- intercept = (0,3)
y-intercept of a line is the point where it crosses the y-axis. At this point, the x = 0 
 So; 
   Slope of the line = 8
    y-intercept  =  3 
Equation of the line; 
        y  = mx + c 
y and x are the coordinates
m is the slope 
c is the y-intercept
       y  = 8x + 3
 
        
             
        
        
        
Answer:
Step 3  they took the square root incorrectly
Step-by-step explanation:
5 ( x-2)^2 +6 = 86
Subtract 6 from each side
5 ( x-2)^2 +6 -6= 86-6
5 ( x-2)^2  = 80
Divide each side by 5
5 ( x-2)^2  /5 = 80/5
(x-2)^2 = 16
Take the square root of each side
sqrt((x-2)^2)  = ±sqrt(16)
x-2 = ±4