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svetoff [14.1K]
3 years ago
11

9+8=17 what number sentence shows the commutative property of addition

Mathematics
2 answers:
NNADVOKAT [17]3 years ago
8 0
The commutative property of addition is just switching the numbers around really! so yr answer would be 9+8=8+9
adelina 88 [10]3 years ago
5 0

By definition we have:

In mathematics, the commutative property or commutativity is a fundamental property that has some operations according to which the result of operating two elements does not depend on the order in which they are taken.

This is fulfilled in ordinary addition and multiplication: the order of the addends does not alter the sum, or the order of the factors does not alter the product.

We have then that the commutative property for this case is:

9 + 8 = 8 + 9 = 17

Answer:

A number sentence that shows the commutative property of addition is:

9 + 8 = 8 + 9 = 17

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alex41 [277]

This question is not complete because is lacks the options for each question.

Complete question

mr. whittaker’s science class uses tide gauges to measure annual variations in water levels at different parts of a river, and then compares those variations to the average annual trend. matea recorded that the water level in one part of the river fell 1.05 millimeters per year for 2.48 years. this data will be compared to the average annual trend, which shows the water level rising 1.8 mm/year.

1) Which number represents the rate at which the water level fell?

a. -1.05 mm/year

b. -1.8 mm/year

c. -2.48 years

d. -2.48 mm/year

2) Which number should the rate be multiplied by to find the total variation in water level?

a. 1.05 mm/year

b. 1.8 mm/year

c. 2.48 years

d. 2.48 mm/year

Answer:

1) Which number represents the rate at which the water level fell?

a. -1.05 mm/year

2) Which number should the rate be multiplied by to find the total variation in water level?

c. 2.48 years

Step-by-step explanation:

Total Variation in the water level is calculated by multiplying the rate at which the water level and number or years at which the rate of the water level fell

From the question, we can see that the rate at which the water level fell is -1.05 mm/year and number of years at which the water level fell is 2.48mm

Hence,Total Variation in the water level is calculated as

-1.05 mm/year × 2.48 years

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Answer:

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Step-by-step explanation:

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tamaranim1 [39]

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Step-by-step explanation:

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Convert -4(1/5) to an improper fraction.

A mixed number is an addition of its whole and fractional parts.

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Cancel the common factor of 3.

Move the leading negative in − 21 /5 into the numerator.

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Factor 3 out of −21.

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Rewrite the expression.

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