The weekly salaries of teachers in one state are normally distributed with a mean of $490 and a standard deviation of $45. what is the probability that a randomly selected teacher earns more than $525 a week? your answer should be a decimal rounded to the fourth decimal place.

1. are the triangles similar and if so why? what is the value of x? show your work.

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.

Which of the following pair(s) of circles have las a common external tangent? select all that apply. a and b a and c b and c