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6 December, 18:05

A submarine started 9 meters below the surface of the water. It is now 1 meters below the surface. What was its change in depth?

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Answers (2)
  1. 6 December, 19:36
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    so 9 meters below is - 9, then you have to go up x to get 1 so 1 - (-9) is 10., so it went up 10, or the change was 10 i should say
  2. 6 December, 21:32
    0
    9 meters below the surface means it is - 9 meters. 1 meter below the surface means it is - 1. So its change of depth is - 9 + x = - 1. Add 9 to both sides to get x = 8 feet. It increased 8 feet.
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