Answer:
i think is probably 70 sec or 75
Step-by-step explanation: idk
 
        
                    
             
        
        
        
Answer:
See below 
Step-by-step explanation:
Regularly, 1.25
Now,0.5
So, 

So, the percentage of decrease price is 60%.
 
        
             
        
        
        
The diameter is 5.72958
(in order to find the diameter use the equation d= C/pi )
 
        
                    
             
        
        
        
Answer:
   Both expressions should be evaluated with two different values. If for each substituted value, the final values of the expressions are the same, then the two expressions must be equivalent.
Step-by-step explanation:
Both expressions are linear expressions. It takes 2 points to define a line. If the lines defined by each expression go through the same two points, then the expressions are equivalent.
If the expressions have the same value for two different variable values, they are equivalent. (choice D)
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<em>Additional comment</em>
One more point is needed than the degree of the polynomial expression. That is, quadratic (degree 2) expressions will be equivalent if they go through the same 2+1 = 3 points.
 
        
             
        
        
        
Answer:
a₁₃ = - 27x - 41
Step-by-step explanation:
The nth term of an arithmetic sequence is
 = a₁ + (n - 1)d
 = a₁ + (n - 1)d
where a₁ is the first term and d the common difference
Here a₁ = - 3x + 7
d = a₂ - a₁ = - 5x + 3 - (- 3x + 7)
                  = - 5x + 3 + 3x - 7
                  = - 2x - 4
Then
a₁₃ = - 3x + 7 + 12(- 2x - 4)
      = - 3x + 7 - 24x - 48
      = - 27x - 41