Chứng minh ( A ∪ B ) X C = ( A X C ) ∪ ( B X C)

Rewrite the hyperbolic equation 4y^2 -9x^2 +54x-8y-113=0

#1-20 state whether the angles are alternate interior, alternate exterior, vertical, or corresponding angles.

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?