Answer:
x^2 -x -2
Step-by-step explanation:
Use polynomial long division.
            0 + x^2  -x  -2
            ___________________________________
(2x+3)  |  2x^3  +x^2  -7x  -6
            -2x^3  -3x^2
             _________
                       -2x^2 -7x
                       +2x^2  +3x
                        __________
                                    -4x  -6
                                     +2x  +6
                                    _______
                                           0
 
        
             
        
        
        
Answer:
 95% Confidence interval: (14.4537 ,15.1463)
Step-by-step explanation:
We are given the following in the question:
Population mean, μ = 15 feet
Sample mean,  = 14.8 feet
 = 14.8 feet
Sample size, n = 16
Alpha, α = 0.05
Sample standard deviation, σ = 0.65 feet
Degree of freedom = n - 1 = 15
 95% Confidence interval: 
 
  
Putting the values, we get,  
 
  
 
  
is the required confidence interval for the true mean length of rods.
 
        
                    
             
        
        
        
Answer:h=60×2
=120
Step-by-step explanation: