Answer:  
Step-by-step explanation:
 Given the angle of 55 degrees, you know that the adjacent side is "x" and the length of the hypotenuse is 20.
 Therefore, you need to remember the following identity:
 
 Then, knowing that:
 
  You need to substitute these values into :
:
  
 Now, you can solve for "x":
 
 Rounded to the nearest hundreth:
 
 
        
             
        
        
        
Which question to answer?
        
             
        
        
        
Work shown above! Box a is 240 lbs Box b is 120 and Box c is 150 lbs hope this helps c:
 
        
        
        
X= -9.375. 0.06x-0.14x=13.48-12.73. -0.08x=0.75