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7 February, 23:54

Each hour, the temperature dropped by 3 1/2 degrees. What was the change in temperature in 2 1/2 hours?

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Answers (2)
  1. 8 February, 02:01
    0
    Multiply the change per hour by the number of hours:

    3.5 degrees per hour x 2.5 hours = 8.75

    Since the temperature dropped, the change would be a negative value.

    The change was - 8.75 (-8 3/4) degrees.
  2. 8 February, 02:15
    0
    8 3/4 degrees

    Step-by-step explanation:

    In 1 hour, the temperature drops 3 1/2 degrees.

    In 2 1/2 hours, the temperature drops 2 1/2 times 3 1/2 degrees.

    We need to multiply 2 1/2 by 3 1/2.

    2 1/2 * 3 1/2 =

    Change both mixed numerals into fractions.

    = (2 + 1/2) * (3 + 1/2)

    = (4/2 + 1/2) * (6/2 + 1/2)

    = 5/2 * 7/2

    = 35/4

    = 8 3/4

    Answer: The temperature change in 2 1/2 hours was 8 3/4 degrees.
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