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Mathematics 9 Online
OpenStudy (babyk66):

On a number line, the surface of a river is marked at −220 feet and the top of a building is marked at +19 feet, where 0 represents sea level. What do −220 and +19 represent?

OpenStudy (babyk66):

@Hero

OpenStudy (babyk66):

@Hero plz helpDX

OpenStudy (babyk66):

plz help plz

OpenStudy (babyk66):

hello?

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