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cupoosta [38]
3 years ago
11

Ericka observed the total variation in the water level over 6.2 years to be −13.64 mm. She compared this to the average annual t

rend, which shows the water level rising 1.8 mm/year. Remember, she used 6.2 years as her time period. What is the difference between how much average water levels rose and how much the water level fell in the part of the river she observed?
__________millimeters
Mathematics
1 answer:
vekshin13 years ago
8 0

Answer:

In the area that she observed, the water level fell 13.64mm over 6.4 years, for an average annual rate of change of: -13.64 ÷ 6.2 = -2.2 mm/ year.

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