JFK was the President
youngest
oldest
meanest
nicest​

Youngest

Explanation:

The youngest to become president by election was John F. Kennedy, who was inaugurated at age 43.

~Hope this helps

youngest

Explanation:

I do not know if this had  multiple answers but JFK was the youngest president and was inaugurated at age 43. For the other 2 options of meanest and nicest those are both technically  opinions so I believe my answer is correct at youngest.

answer: alexander hamilton

explanation: alexander hamilton was george washington's right hand man. he took an early role in the militia as the american revolutionary war began. in 1777, he became a senior aide to general washington in running the new continental army.

a sample of water is taken and kept in a beaker in a freezer at a constant temperature of 0°c. if the system is at dynamic equilibrium, which of these statements is true?