A circle is drawn to represent a pizza with a 12-inch diameter. The circle is cut into eight congruent pieces. What is the length of any one piece of this circle?

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?

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In order to be invited to tutoring or extension activities a students performance 20 point higher or lower than average for the