Final answer:
The farmer moves 4590 chickens to the slaughterhouse each day.
Step-by-step explanation:
To calculate the number of chickens moved to the slaughterhouse each day, we need to determine how many chickens do not meet the requirement of laying at least one egg a week.
Given that each chicken can lay one egg each day, we can calculate the number of eggs produced in a week by multiplying the number of chickens by 7.
Therefore, the number of chickens moved to the slaughterhouse each day is 765 - (765 x 7) = 765 - 5355 = 4590.
So, each day, 4590 chickens are moved to the slaughterhouse.