How to draw rectangles showing 3 1/2
2 answers:
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Let the marks of the students in class 1 be
the average of these 12 marks is 90, so
which means
similarly, let
be the marks of the students in the second class,
so
which means
The 32 students averaged:
the average of these 12 marks is 90, so
which means
similarly, let
so
which means
The 32 students averaged:
the horizontal axis is the bottom (____), the title is usually hiden in the task name
