Answer:
  =  −
8/5
Step-by-step explanation:
Distribute
3
(
2
+
3
)
=
1
(
+
1
)
6
+
9
=
1
(
+
1
)
Multiply by 1
6
+
9
=
1
(
+
1
)
6
+
9
=
+
1
Subtract  
9
9
9
 from both sides of the equation
6
+
9
=
+
1
6
+
9
−
9
=
+
1
−
9
 
        
                    
             
        
        
        
Answer:
wait no, THANK YOUU <333
Step-by-step explanation:
 
        
                    
             
        
        
        
2 beginner, 6 intermediate, 3 advanced...total of 11
P(advanced) = 3/11
replaced
P(beginner) = 2/11
P(both) = 3/11 * 2/11 = 6/121 <=
        
             
        
        
        
Answer:
11). x = 25.8°
12). x = 67.3°
Step-by-step explanation:
11). By using sine rule in the given triangle,
    cos(x) = 
    cos(x) = 
    x = 
    x = 25.84
    x ≈ 25.8°
12). By applying tangent rule in the given triangle,
     tan(x) = 
     tan(x) = 
     x = 
     x = 67.29°
     x ≈ 67.3°