Answer:
18
Step-by-step explanation:
-3(2x-3)
-3x(-6)
-3x-6=18 because the negatives cancel each other out.
 
        
                    
             
        
        
        
Answer:
Given system of equations:

To solve by substitution, equate the equations and solve for x:

Therefore, the x-values of the solution are  and
 and  .
.
To find the y-values of the solution, substitute the found values of x into the functions:




Therefore, the solutions to the given system of equations are:
 and
 and 
 
        
             
        
        
        
Answer:
Between 12.614 years and 16.386 years
Step-by-step explanation:
Given that:
Mean age (μ) = 14.5 years, standard deviation (σ) = 4.6 years, number o sample (n) and the confidence interval (c) = 90% = 0,9
α = 1 -c = 1 -0.9 = 0.1

The z score of  is the same as the z score of 0.45 (0.5 - 0.05). This can be gotten from the probability distribution table. Therefore:
 is the same as the z score of 0.45 (0.5 - 0.05). This can be gotten from the probability distribution table. Therefore:

The margin of error (e) =  =
 = 
The interval = μ ± e = 14.5 ± 1.886 = (12.614 ,16.386)
 
        
             
        
        
        
The answer is 7/16 in decimal it would be 0.4375 hope this helps
        
             
        
        
        
Answer:
Had the same question, the answer was d
Step-by-step explanation:
Hope it helps!