Hi there,
No, it isn't
5x - 3 = 12
5x = 12 + 3
5x =15
Hence, X = 3
3 is the solution
Hope this helps :)
        
             
        
        
        
Answer:
Option a) u is called the "error term". It is the error we make in prediction
Option d) x is called the independent variable because x is independent from y and u.
Step-by-step explanation:
We are given the following information in the question:

where y is the dependent variable, x is the independent variable.
 : It is the value of y when x is zero, that is y-intercept.
: It is the value of y when x is zero, that is y-intercept.
 : It is the coefficient of x in predicting the dependent variable y.
: It is the coefficient of x in predicting the dependent variable y.
u is the error term.
- An error term represents the margin of error.
- It refers to the sum of the deviations within the regression line, that is the difference between the predicted value and the observed value of y. 
Thus, Option A) u is the error term and Option D)  x is called the independent variable because x is independent from y and u are the correct answer.
 
        
             
        
        
        
Answer:
Z - score = 2.83
Step-by-step explanation:
Given the following :
Number of samples (N) = 60
Sample mean (x) = 41.9mg
Population mean (μ) = 40mg
Population standard deviation (sd) = 5.2
Using the relation :
Z = (x - μ) / (sd / √N) 
Z = (41.9 - 40) / (5.2 / √60)
Z = 1.9 / (5.2 / 7.7459666) 
Z = 1.9 / 0.6713171
Z = 2.8302570
Therefore, the z-score = 2.83
 
        
             
        
        
        
Answer:2
Step-by-step explanation:
Greatest factor of 6w^4 10a^4
6w^4=2x3xw^4
10a^4=2x5xa^4
There greatest common factor is 2