You have not provided the options, but this solution is an equation that will work:
Answer:
4 / 7 = x
Step-by-step explanation:
       Since the total material is 4 feet long, we can divide 4 feet by 7, the number of equal pieces cut, to see how long each piece is.
       This gives us an answer of 4/7 or about 0.571
 
        
             
        
        
        
To solve this problem you must apply the proccedure shown below:
 1. You have the following equation of a parabola, given in the problem above:
 x<span>=1/16y^2
 2. Then, based on the graph attached, you have:
 p=y^2/4x
 p=8^2/(4)(4)
 p=64/16
 p=4
 3. The directrix is:
 directrix=h-p
 directrix=0-4
 directrix=-4 
The answer is:-4</span>
 
        
        
        
∠DOC is the average of the given angle values,
  (170° +44°)/2 = 107°
∠DOB is the supplement to that,
  180° -107° = 73°
The appropriate choice is
  B)   73°
        
             
        
        
        
Answer:
7 1/2 hours I believe is the correct answer. Hope it works!
 
        
                    
             
        
        
        
Angle in a semi circle is 90°
<a = 180-90-<b = 90-28 = 62°
opposite angles of a cyclic quadrilateral sums up to 180° 
<b + <a = 180
<b = 180-62 
<b = 118°