Will any 2 lines cut by a transversal with congruent alternate interior angles, be parallel?

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?

If 1/√5+1/√5+1=p+q√r , find the values of p, q and r

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