Answer:
= -25x-19/10
Step-by-step explanation:
 
        
             
        
        
        
Answer:
3.4 minutes
Step-by-step explanation:
Every morning there are expected 240 customers who arrive at bank for the customer service. There are on average 240 customers arriving to the bank every morning. There are total 5 bank tellers and they take average 3 minutes to help customer. The average time each bank teller spends on satisfying a customer will be calculated using the linear model,
Using wait time calculator:
Average service time / standard deviation
Ce = 3/1.5 = 2
The spent time on a customer is 3.4 minutes.
 
        
             
        
        
        
Area = bh/2
(9.9 x 5.5)÷2 = 27.225 ft^2
        
                    
             
        
        
        
The slope means the depth per second
        
             
        
        
        
Answer:  

Step-by-step explanation:
to find the surface area we need to find the followng areas:  
- area of a triangle and multiply it by 4 (because there are 4 triangles)
And once we have those areas, we add them to find the surface area.
Area of the square:
the formula to find the area of a square is:

where  is the length of the side:
 is the length of the side: 
thus the area of the square is:


Area of the triangles:
the are of 1 triangle is given by

where  is the base of the triangle:
 is the base of the triangle:  (the base of the triangle is the side of the square)
 (the base of the triangle is the side of the square)
and  is the height of the triangle:
 is the height of the triangle: 
thus, the area of 1 triangle is:



the area of the 4 triangles is (we multiply by 4):


finally we add the area of the square and the area of the 4 triangles to find the total surface area:

