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18-09-2014
Mathematics

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. A scuba diver went down 20 feet below the surface of the water. Then she dove down 3 more feet. Later, she rose 7 feet. What integer describes her depth?

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SlowZasob SlowZasob

21-09-2014

Firstly she was 20 feet below the surface, then she dove down 3 more feet and then she dove up 7 feet, so:

-20 - 3 + 7 =
= -23 + 7 =
= -16 [feet] (that's her depth)

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