Andrea has six times as many dimes as quarters. if her dimes and quarters total $12.75, how many of each coin does she have? a) 15 quarters and 90 dimes b) 10 quarters and 60 dimes c) 5 quarters and 30 dimes d) 15 quarters and 21 dimes

Given that ot =5, xt=12, and ox= 13 is xy tangent to circle o at t? explain.

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?

Someone answer asap for ! max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a. the median of max’s data is 250 b. more than half of the data points max recorded were 177 centimeters. c. a data point chosen at random is as likely to be above the mean as it is to be below the mean. d. every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.