There are twenty classes at each of two middle schools. the number of students in each class at each school is shown in the dot plots below. which statement compares the mean number of students for the data in the plots?

you estimate that the angle of elevation to the top of the 86th floor (the observatory) is 82 .the total height of the building is another 123 meters above the 86th floor.

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16 would be your answer

depends what are you allowed to do ?