its a sqaure so the angles are 90 degress each. 
90 - 38 = 52
answer: C. 52
 
        
                    
             
        
        
        
Answer:
 =
 = 
Step-by-step explanation:
The given expression is :

We need to find this expression is equal to what.

Hence,  is equal to
 is equal to  . Hence, the correct option is (c).
. Hence, the correct option is (c).
 
        
             
        
        
        
Last answer is the correct. 
Distance between each hour is the same-13 miles. Good luck.
        
             
        
        
        
1- 38
2-90
3-38
hopefully i’m right i’m not 100% sure though :)
        
                    
             
        
        
        
Answer:
d. 15
Step-by-step explanation:
Putting the values in the shift 2 function
X1 + X2 ≥ 15 
where x1=  13, and x2=2 
13+12≥ 15
15≥ 15
At least 15 workers must be assigned to the shift 2.
The LP model questions require that the constraints are satisfied.
The constraint for the shift 2 is that the  number of workers must be equal or greater than 15
This can be solved using other constraint functions e.g
Putting  X4= 0 in 
X1 + X4 ≥ 12
gives 
X1 ≥ 12 
Now Putting the value X1 ≥ 12  in shift 2 constraint
X1 + X2 ≥ 15 
12+ 2≥ 15
14 ≥ 15 
this does not satisfy the condition so this is wrong.
Now from 
X2 + X3 ≥ 16
Putting X3= 14
X2 + 14 ≥ 16
gives
X2  ≥ 2
Putting these in the shift 2 
X1 + X2 ≥ 15 
13+2 ≥ 15 
15 ≥ 15 
Which gives the same result as above.