Answer:measurement  of angle B is

<h3>Answer C is correct</h3>
Step-by-step explanation:

 
        
             
        
        
        
Answer:
   4 hours
Step-by-step explanation:
For three visits, the electrician earned $40 × 3 = $120 in "per-visit" charges. For working x hours, he earned 20x in "per-hour" charges. The total of these came to 50x:
   120 +20x = 50x
   120 = 30x . . . . . . . . subtract 20x
   4 = x . . . . . . . . . . . . . divide by 30
The electrician worked 4 hours that day.
 
        
             
        
        
        
Answer:
C
Step-by-step explanation:
 
        
             
        
        
        
So check the picture below
if we check the solutions or zeros for the equation, we get 

and as you can see in the picture, the value of "x" when y = 3.5, or the height of the truck is  

the truck, ends up with a clearance of 

 on either side, so, the maximum clearance, the truck can have, those two clearances added together, 
 
 
        
        
        
Answer:
The coordinates are (0,b) 
Step-by-step explanation:
Here, we want to find the coordinates of the midpoint F 
as we can see, F is between A and B
we proceed to use the midpoint formula 
The midpoint formula is;
(x,y) = (x1 + x2)/2, (y1 + y2)/2 
(x1,y1) = (-3a, b)
(x2,y2) = (3a, b)
The substitution of these values will thus yield;
(-3a + 3a)/2, (b + b)/2
= (0/2), (2b/2)
= (0, b)