Given vectors u = (2, -3) and v= (1, -1), what is the measure of the angle between the vectors? O 11.3°
O 78.9°
O 92.2°
O 101.3°

If the graphs of the linear equations in a system are parallel, what does that mean about the possible solution(s) of the system? a. there are infinitely many solutions. b. there is no solution. c. there is exactly one solution. d. the lines in a system cannot be parallel.

Triangle xyz has vertices x(1,3), y(0,0)

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?