In the 17th century, there were more than 800, 000 inhabitants of Paris. At the time, it was believed that no one had more than 200, 000 hairs on her/his head. Assuming these numbers are correct and that everyone has at least one hair on her/his head (that is, no one is completely bald), please use the pigeonhole principle to show, as the French writer Pierre Nicole did, that there had to be two Parisians with the same number of hairs on their heads. Then please use the generalized pigeonhole principle to show that there had to be at least five Parisians at that time with the same number of hairs on their heads

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.

step-by-step explanation:

where is the question is there is a formula or is there not one

the answer is:

the correct option is the option b.

to calculate the surface area of the right cylinder, we need to use the following formula:

from the picture we know that:

so, substituting and calculting we have:

hence, we have that the correct option is the option b.

have a nice day!

and?

step-by-step explanation: