Write two subtraction facts related to 7 +5=12

In the 30-60-90 triangle below side s has a length of and side r has a length

Manuela solved the equation below. what is the solution to manuela’s equation?

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.)