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29 April, 12:14

2. A submarine starts out at 135 feet below sea level. It dives 239 feet before rising 307 feet. Represent the current depth of the submarine as an integer.

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  1. 29 April, 12:43
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    The submarine is at 67 feet below the sea level (-67)

    Step-by-step explanation:

    * Lets explain how to solve the problem

    - The zero level is the sea level

    - Any height below the sea level is negative

    - Any height above the sea level is positive

    - A submarine starts out at 135 feet below the sea level

    ∴ The submarine is at - 135 feet

    - The submarine dives 239 feet before rising

    ∴ The submarine dives another - 239

    ∴ The submarine is at - 135 + - 239 = - 374 feet

    * The submarine is at 374 feet below the sea level

    - The submarine rising 307 feet

    ∴ The submarine dives 307 feet up

    - Add the last position to the rising distance

    ∴ The current depth of the submarine = - 374 + 307 = - 67 feet

    ∴ The submarine is at 67 feet below the sea level
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