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3 years ago

Twice the quotient of 50 and the sum of a number y and 8

1 answer:

4 0

1st the sum of y and 8 is
y+8
the quotient of 50 and (y+8) is simply dividing 50 by (y+8)
50 / (y+8)
Twice the quotient mean multiply 50 / (y+8) by 2, so the answer is:
2 * 50 / (y+8)

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elena55 [62]

Answer:

The correct answer is C. r = 0 because is most likely the closest to the correlation coefficient of the data.

Step-by-step explanation:

Using Excel, we captured the data provided for the 12 different homes for calculating the correlation coefficient manually, this way:

n = 12

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r = [n *∑xy - (∑x * ∑y)]/[√(n * ∑x² - (∑x)²) * (n * ∑y² - (∑y)²)]

Replacing with the real values, we have:

r = [12 * 167,532 - (904 * 2,169)]/[√(12 * 69,552 - 904²) * (12 * 404,615 - 2,169²)]

r = [2'010,384 -1'960,776]/[√(834,624 - 817,216) * (4'855,380 - 4'704,561]

r = 49,608/√17,408 * 150,819

r = 49,608/ 51'239.215

r = 0.00097

The correct answer is C. r = 0 because is most likely the closest to the correlation coefficient of the data.

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Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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This best matches the description of choice B.

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Comment on the answer

The formula offered in the question will show the "percent change" from 100 to 103 as 3. It is not 3; rather, it is 3%. The final multiplication must be by 100% in order to arrive at the proper number.

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