I'd say centimeters, if that's what you're looking for. Maybe 1-2 cm.
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x= first number y= second
x=2y+9 and x+y=129, these are the equations...solving gives x=89,y=40
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(they're the same)
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Image result for State the domain and range in set notation
The domain is the set of all first elements of ordered pairs (x-coordinates). The range is the set of all second elements of ordered pairs (y-coordinates). Only the elements "used" by the relation or function constitute the range. Domain: all x-values that are to be used (independent values).
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whats the question exatly?
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