What is the standard form equation of the ellipse with vertices at (0,6) and (0, -6) and Co-vertices at (4,0) and (-4, 0)?

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?

Segment ab is shown on the graph. which shows how to find the x-coordinate of the point that will divide ab into a 2: 3 ratio using the formula

What does the relationship between the mean and median reveal about the shape of the data