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What is the distance between the points (2 -3) and (-6 4) on the coordinate plane

Answer for 10 points show work you guys in advanced < 3

The patient recovery time from a particular surgical procedure is normally distributed with a mean of 5.2 days and a standard deviation of 1.7 days. what is the probability of spending more than 2 days in recovery? (round your answer to four decimal places.)