Answer:
y= 4
Step-by-step explanation:
Okay so this is inverse operations.
You have to move the 2y over underneath the 6y and subtract them, you should get 4y. Your problem should now look like this. 4y-20=-4
Now you need to more the +20 over underneath the -4 and add them. Your problem should now look like this. 4y= 16
You now divide 4 into 16 which will give you 4
So y= 4
Have a good day!
Answer:
Step-by-step explanation:
Given
Economic system Q is given by

also 
if 



substitute these values




differentiate w.r.t to L to get 



Answer: it’s half as much of the radius so the relationship is 4
Step-by-step explanation: