Answer:

Step-by-step explanation:
We have to calculate the time derivative of T=PV/nR with P and V variable and n and R constants. This is:

What we have to do is the derivative of a product:

Substituting, we have:

where all these values are given since the time derivatives of P and V are their variation rate, using minutes.
We then substitute everything, noticing that already everything is in the same system of units so they cancel out:

And then just calculate:

 
        
             
        
        
        
Answer:
20,800
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
28
Step-by-step explanation:
So this means to replace the r you see in 4r^2-8 with 3.
Let's do that:
4(3)^2-8
Now to simplify this just use pemdas or a calculator:
4(9)-8     since 3^2 means 3*3=9
36-8
28
 
        
                    
             
        
        
        
The vertex (5,39)
5 is the value of x. 39 is the value of y. y is the cost function of the minimum value in dollars.
(5,39) vertex means that  <span>Buying five of each type of plant costs $39, which is the lowest possible cost.</span>
        
                    
             
        
        
        
Answer:
833/500 or  1  333/500
Step-by-step explanation: