Answer: The value of x is 3.
Step-by-step explanation:
Since we have given that 
10,11, 12 and x
Average of above numbers = 9
As we know that 
Average is given by

Hence, the value of x is 3.
 
        
             
        
        
        
Answer:
+) m∠1 = m∠2 (vertical angles theorem)
+) m∠2 and ∠3 are supplementary (because a//b)
+)m∠3 = m∠4 (alternate interior angles theorem, c//d)
=> ∠1 and ∠4 are supplementary (substitution property of equality)
Step-by-step explanation:
 
        
             
        
        
        
Answer:
A
REASON:
It's not B or D because it's increasing and it's not C because if -3 - 15 is -18 then I am pretty sure it's not going to be 3 because it's multiplying   
 
        
                    
             
        
        
        
The answer to your question is -304
        
             
        
        
        
Answer:
A
Step-by-step explanation:
The solution to these two graphs will be when they are equal. Therefore:

Hope this helps!