Answer:
34.482 is the answer to your question
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
615.75m squared
 
        
                    
             
        
        
        
Answer:
x+6
Step-by-step explanation:
The given expression is (2+x)+4.
The associative property is : 
(a+b)+c= a+(b+c)
Here,
a = 2, b = x and c = 4
So,
(2+x)+4 = 2+(x+4)
= x+6
So, the equivalent expression is x+6.
 
        
             
        
        
        
Answer:
Step-by-step explanation:
Given the sequence :
23, 19, 13, 5, -5.......
From the sequence, the common difference is unequal, as their is a constant Increment in the difference after successive numbers. 
19 - 23 = -4
13 - 19 = -6
5 - 13 = -8
-5 - 5= -10
Hence an constant difference of - 2 after each successive difference.
Hence, this is a quadratic sequence 
With the formula 
an² + bn + c