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13 September, 08:21

A certain rod in an internal combustion engine is supposed to be 5.9 inches. The tolerance on the rod is 0.0006 inches. If x represents the length of a rod, the acceptable lengths of a rod can be expressed as StartAbsoluteValue x minus 5.9 EndAbsoluteValue less than or equals 0.0006. Determine the acceptable lengths of the rod.

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  1. 13 September, 09:51
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    The acceptable lengths of the rod are the lengths between 5.8994 and 5.9006 inches.

    Step-by-step explanation:

    If the acceptable lengths of a rod can be expressed as:

    | x - 5.9 | ≤ 0.0006

    Now, if we have that:

    | a | ≤ b

    it can be written as:

    -b ≤ a ≤ b

    Then, the acceptable lengths of a rod can be also expressed as:

    -0.0006 ≤ x - 5.9 ≤ 0.0006

    So, if we sum 5.9 at every part of the inequation, we get:

    -0.0006 + 5.9 ≤ x ≤ 0.0006 + 5.9

    5.8994 ≤ x ≤ 5.9006

    It means the acceptable lengths of the rod are the lengths between 5.8994 and 5.9006 inches.
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