What is the interquartile range of this data set?

7, 4, 6, 2, 8, 1, 10, 5, 7, 4, 9, 11, 13

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He that is measured at 220° is a reflex angle. the opposite angle is obtuse. find the measure of obtuse .

Jim had 15 minutes to do 5 laps around his school what would his time be

The architect's side view drawing of a saltbox-style house shows a post that supports the roof ridge. the support post is 8 ft tall. the distance from the front of the house to the support post is less than the distance from the post to the back of the house. how far from the front of the house is the support post positioned?