Answer:
x=6 and z=107
Step-by-step explanation:
From the figure or diagram we can say that 
z+15x-17=180 ---(1)
z+11x+7=180 ---(2)
Subtracting (1) and (2)
z+15x-17-(z+11x+7)=180-180
4x-24=0
4x=24
x=6
Substitute x=6 in (2)
z+11(6)+7=180
z+66+7=180
z=180-73
z=107
 
        
             
        
        
        
Answer:
B
Step-by-step explanation:
Using the Sine Rule in ΔABC
 =
 =  =
 = 
∠C = 180° - (82 + 58)° = 180° - 140° = 40°
Completing values in the above formula gives
 =
 =  =
 = 
We require a pair of ratios which contain b and 3 known quantities, that is
 =
 = 
OR
 =
 =  → B
 → B
 
        
                    
             
        
        
        
Answer:
can you retype the equation 
I think it is not correctly typed