Ericka is also in Mr. Whittaker's science class and she recorded the variation in water level at a different part of the river. She observed that the water level there fell 2.2 millimeters per year over a period of 6.2 years

This data is compared to the average annual trend, which shows the water level rising 1.8 mm/year.

Which of the decimals in the problem should be represented as a negative rate?

Which two factors should Ericka multiply to find the total variation in water level?

Question

Mathematics

Dominique Ingram

28 March, 15:45

Ericka is also in Mr. Whittaker's science class and she recorded the variation in water level at a different part of the river. She observed that the water level there fell 2.2 millimeters per year over a period of 6.2 years

This data is compared to the average annual trend, which shows the water level rising 1.8 mm/year.

Which of the decimals in the problem should be represented as a negative rate?

Which two factors should Ericka multiply to find the total variation in water level?

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Answers (1)

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Triston Harding · Answer 1

Which of the decimals in the problem should be represented as a negative rate?

2.2 mm/year

Which two factors should Ericka multiply to find the total variation in water level?

6.2 years and - 2.2 mm/year

Step-by-step explanation:

2.2 is represented as a negative integer because the problem said the key word "fell."

You should multiply 6.2 and - 2.2 because - 2.2 is mm per year and it is going on for 6.2 years so you would multiply those together.