The mean temperature for the first 4 days in January was 7°C. The mean temperature for the first 5 days in January was 9°C.

Question

The mean temperature for the first 4 days in January was 7°C.
The mean temperature for the first 5 days in January was 9°C.
What was the temperature on the 5th day?

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Savannah 2 months 2021-10-04T21:43:29+00:00 2 Answers 0 views 0

Answers ( )

    0
    2021-10-04T21:45:12+00:00

    Answer:

    17

    Step-by-step explanation:

    sum of the temperatures of first 4 days is 7*4 = 28

    sum of the temperatures of first 5 days is 9*5 = 45

    fifth day temperature is 45-28= 17

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    0
    2021-10-04T21:45:14+00:00

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    Explanation 1

    Answer:

    -1°C

    Step-by-step explanation:

    Now we are given the mean temperature for the first 4 days in January was 9°C

    So, Now we are given that  the mean temperature for the first 5 days in January was 7°C

    So, Temperature on 5th day = Sum of temperatures of first 5 days -Sum of temperatures of first 4 days

    Temperature on 5th day = 35°C-36°C = -1°C

    Hence the temperature on the 5th day was -1°C

    Explanation 2

    Ok to make this easy, do 4 days as 9°C. So 9+9+9+9=36 / 4 = 9. So that’s the first 4 days. Then the 5th day, the mean dropped to 7°C so that means the temperature dropped. -1 is your answer and you can check this by doing 9+9+9+9+(-1) = 35 / 5 = 7°C.

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