Determine whether the triangle is acute, right, or obtuse given the sides: 11, 14, 20

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 value. a. 0.003 b. 0.03 c. 0.3 d. 3

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)