Answer:
y=-37
Step-by-step explanation:
0+6y=7(y+6)-5
0+6y=7y+42-5
6y=7y+37
-1y=37
y=-37
 
        
             
        
        
        
Answer:
A= 13  B=13.1
Step-by-step explanation:
A-B= -0.1
B-A= 0.1
 
        
             
        
        
        
Question:

Answer:


Step-by-step explanation:
Given

Required
Simplify
In trigonometry:

So, the expression becomes:
 
 
Simplify the denominator
 
 
 
 
 
 
 
 
Express the fraction as:


 
 
 
 
 
 
Rationalize
 
 
 
 
 
 
In trigonometry:

Hence:


 
        
             
        
        
        
Answer:
8439
Step-by-step explanation:
7332
 
        
             
        
        
        
Answer:
The value of A is 20
Step-by-step explanation:
To find the answer, note that all triangles have a interior degree measurement of 180. Set the sum of the angles equal to 180. 
71x - 1 + 20x + 90 = 180
91x + 89 = 180
91x = 91
x = 1
Now we can use this in the A angle to find the value. 
A = 20x
A = 20(1)
A = 20