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30 December, 03:25

The Clark family has a hallway that perimeter is 10and4/10 then they add that shortens the length of hallway what is the new perimeter? A. 3 3/10 B. 6 6/10 C. 9 2/10 D. 9 8/10

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  1. 30 December, 03:45
    0
    The correct answer is option (c) 9 2/10

    Step-by-step explanation:

    Perimeter 1 = 10

    perimeter 2 = 4/10

    new perimeter = perimeter 1 - 2 * perimeter 2

    = 10 - 2 * (4/10)

    = 10-8/10

    = 100-8/10

    = 92/10

    = 9 2/10
  2. 30 December, 07:25
    0
    C. 9 2/10

    Step-by-step explanation:

    Because it measures 10. And we cut 4/10 in length, therefore, this value is decreased twice so that it remains a rectangle.

    Then it would be:

    10 - 2 * (4/10) = 10 - 8/10 = 9.2

    And this 9.2 we can express it as a mixed number as follows:

    9.2 = 9 2/10

    If we check, we know that 2/10 = 0.2 that added to 9, would be equal to 9.2
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