In terms of the trigonometric ratios for ΔBCD, what is the length of BD? Insert text on the triangle in GeoGebra to show the length of BD.

Find the value of the cosine for angle a

Janet drove 300 miles in 4.5 hours. write an equation to find the rate at which she was traveling

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?