81 because each person has 9 people to greet and there’s 9 people so 9x9=81
Answer:
yes you seem like a very smart and intelligent girl you seem like you put a lot of thought into that so i think you have a really high chance being that you acomplished all those things by the 8th grade i would consult with your parents before doing anything
Answer:
Low Frequency, Long Wavelength, and Low Energy Transfer
Explanation:
Radio waves are on the larger(and lower frequency) side of the electromagnetic spectrum. These longer wavelengths mean that radio waves have a lower frequency because it takes longer for larger waves to travel. Therefore, less radio waves can travel a certain distance in a minute than a wave of a shorter wavelenght(and therefore lower frequency). Radio waves are considered a low-energy transfer wave. This is because they can be used in most environments for communication, air-traffic control, and broadcasting with little to no harm to the organisms around them. Even though radio waves can be found all around us, because they don't carry much energy, we aren't harmed by the radio waves.
It would be logistics and inventory control because that is often done via computer and that job also controls the finances.
