Which element is most likely to have an oxidation number of +1? Ο Α. Αr O B. K O C. Be​

Acertain radio station broadcasts radio waves that have a wavelength of 298cm what is its broadcast frequency?

The number of passengers who arrive at the platform of a subway station for the 10 am train is a random variable with a mean of 120 and a variance of 16. find the lower bound of the probability that there will be between 100 and 140 passengers (round off to second decimal place).

The diagram shows a boulder rolling down a hill into a valley and then up the opposite hill. at which position does the boulder have the greatest kinetic energy? a b c d