3 years ago

What can antarctic ice core samples tell us about atmospheric co2 levels? select all that apply.

1 answer:

4 0

CO2 ice core data confirms CO2 measurements taken directly from the atmosphere. Ice cores can help scientists estimate atmospheric CO2 levels from centuries ago.

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what is the mean absolute deviation for the following numbers 40 50 60 60 60.5 60.5 70 70 70.5 70.5 70.5 80.5 80.5 80.5 90

cestrela7 [59]

Your answer should be 86.68.
Mean: you add up all the numbers and divide it by the total of the numbers, in this case there are a total of 11. I added all of them up and got 953.5 and divided by 11. Hoped i helped

5 0

3 years ago

Maria and her friends went for a bike ride. The start and end times are shown below. How long did they ride? 2 hours 23 minutes

lesya692 [45]

Answer:

1 hour 37 minutes

Step-by-step explanation:

From the image attached, we can see the start and end time represented by the clock. To calculate the length of time that Maria and her friends rode, we just have to subtract the start time from the end time.

From the end time clock, we can see that the end time is 2:24, while from the start time clock, we can see that the start time is 12:47. Hence, the length of time they rode is:

Length of time for bike ride = 2:24 - 12:47 = 1 hour 37 minutes