Missing number 50+25=75 25+25=50 and =

In the 30-60-90 triangle below side s has a length of and side r has a length

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

If private savings 'v' = 0.75s and total savings 's' equals $4.20 billion, solve for public and private savings.