If the determinant of this matrix is 24, what is the value of b?

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?

Find the area of the unshaded square

An ant travels at a constant rate of 30cm every 2 minutes. at what speed does the ant travel per minute