MATHEMATICS HIGH SCHOOL

Maria gathered the data in the table. She finds the line of best fit to be y = 2.78x – 4.4.What is the residual value when x = 4?

–6.72
–0.58
0.58
6.72

Answers

Answer 1
Answer: The data in the table is not shown here but here is the formula for the residual
residual = observed value - predicted value

To get the predicted value, you simply use the best fit equation:
y = 2.78x - 4.4

Substituting 4:
y = 2.78(4) - 4.4
y = 6.72

This value is subtracted from the observed value to get the residual.
Answer 2
Answer: The correct answer would be C.0.58

You plug 4 into the line of best fit and get 6.72. This is your predicted value, but the residual is the difference between the actual value and predicted. So you subtract: 7.3-6.72=0.58.

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Answers

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Step-by-step explanation:

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Answers

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Answers

Answer:

452.3893421 cm^2

452.4 (to one decimal place)

Step-by-step explanation:

Radius (r) - 6cm

The surface area of sphere = 4pi r^2

therefore:

4 * pi * 6^2

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144 * pi

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Answer:

Surface area = 452,4

Step-by-step explanation:

radius = 6 cm

Surface area = 4πr²

Surface area = 4(3.1416)(6)²

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Surface area = 452, 3904

Surface area = 452,4
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