Answer:
what are you asking?
Step-by-step explanation:
 
        
             
        
        
        
Answer:
No solution
Step-by-step explanation:
21−7x=−7x−21−4
21−7x=−7x−25
21=−25
No solution
 
        
             
        
        
        
Answer:  The answer is (B) ∠SYD.
Step-by-step explanation:  As mentioned in the question, two parallel lines PQ and RS are drawn in the attached figure. The transversal CD cut the lines PQ and RS at the points X and Y respectively.
We are given four angles, out of which one should be chosen which is congruent to ∠CXP.
The angles lying on opposite sides of the transversal and outside the two parallel lines are called alternate exterior angles. 
For example, in the figure attached, ∠CXP, ∠SYD and ∠CXQ, ∠RYD are pairs of alternate exterior angles.
Now, the theorem of alternate exterior angles states that if the two lines are parallel having a transversal, then alternate exterior angles are congruent to each other.
Thus, we have
∠CXP ≅ ∠SYD.
 So, option (B) is correct.
 
        
             
        
        
        
Answer: 23.2  
Step-by-step explanation:
 
        
             
        
        
        
Answer:
its 4
Step-by-step explanation: