Write an expression that shows how to use the halving and doubling strategy to find 28 times 50

Find the value of tan theta if sin theta = 12/13 and theta is in quadrant 2

X-10/4 when x = –18 a 7 b –2 c –7 d 2

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $36.98. find the probability that a randomly selected bill will have an amount greater than $173, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?