Width: x
Length: 2x
Perimeter=2x+2x+x+x=6x
32 cm more than width means x+32
6x=x+32
5x=32
x=6.4
Dimension is 6.4×12.8 (width×length)
        
             
        
        
        
We are given the average body heat  equal to 2200 BTU. In this problem, we are asked to determine the total body heat  in BTU per cubic foot given the dimensions of the room. The volume of the room is 18000 ft3. we multiply the average heat by 20 persons.hence the answer to this problem is 2.44 BTU/ft3. 
        
             
        
        
        
The difference quotient for the function f(x) is 
Given :
Difference quotient formula 

Given function 
find the difference quotient using the formula 
first we find out f(x+h) using given f(x)
replace x with x+h

Now replace it in our formula and also replace f(x)

Learn more :brainly.com/question/23630564
 
        
             
        
        
        
Answer:
c) $615
Step-by-step explanation:
The expression used to determine how much is the charge for the customer after the job is

where
h is the number of hours the job took
c is the number of cans of paint used during the job
In this problem:
c = 3 (the painter used 3 cans of paint)
h = 15 (the painter took 15 hours for the job)
So substituting these values into the equation for p, we find the total value that the painter charged for the job:

So, the correct answer is
c) $615
 
        
             
        
        
        
Answer:
Step-by-step explanation:
<u>Full surface area:</u>
- S = 3(6*10) + 2(1/2*8*10) = 260 cm³