Answer:
a) There is no significant difference between restaurants with and without order-confirmation boards
b) -12.5 ± 3.604 or C.1.E (-16.10, -8.90)
Step-by-step explanation:
answers are in the attachment below
 
        
             
        
        
        
Simplify 1/3b to b/3
b/3 = -3
multiply both sides by 3
b = -3 * 3
multiply 3 * 3 so it can = 9
Answer: b = -9
        
                    
             
        
        
        
Hello there! 
2(x - 3) = 2x + 5 
Let's start by using the distributive property for the left side. 
(2)(x) + (2)(-3) = 2x + 5 
2x - 6 = 2x + 5 
Then we need to add 6 to both sides 
2x - 6 + 6 = 2x + 5 + 6 
2x = 2x + 11 
We need to transfer 2x on the left side, we gonna do that by subtracting 2x from both sides 
2x - 2x = 2x + 11 - 2x 
0 = 11 
Thus, 
There are no solutions. 
I hope this helps! 
Good luck with your career! 
        
                    
             
        
        
        
Answer: 0.00009
Step-by-step explanation:
9*10^-5 = 9/(10^5) = 9/100000 = 0.00009
 
        
                    
             
        
        
        
Answer:

Step-by-step explanation:
The volume of a cone is given as:

where r = radius
h = height of cone
The height of the cone is 17.7 cm and its base radius is 7.9 cm (diameter is 15.8 cm).
Its volume is:
