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shepuryov [24]
2 years ago
5

All points on a given line have their y-coordinate as 9. What is the equation of this line? A. x + y = 9 B. x – y = 9 C. x = 9 D

. y = 9 E. x + y = 0
Mathematics
2 answers:
jeka57 [31]2 years ago
8 0

It would be D.


hope it helps :)

Phoenix [80]2 years ago
4 0

D. y = 9 because it has a complete zero slope while the y-intercept of the equation is 9, so the equation is y = 9.

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For a circle with a radius of 15 cm, what is the length of an arc intercepted by an angle measuring 120°?
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Answer: 31.43 cm

Step-by-step explanation:

The length of an arc  is calculated using the formula:

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where : theta is the angle in degree

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L = r∅

Since , the angle is given in degree , we will use the first formula.

L = \frac{theta}{360} X 2\pir

L = \frac{120}{360} X 2 X π X 15

L = \frac{1}{3} X 2 X \frac{22}{7} X 15

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L ≈ 31.43 cm

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Answer:

line of best fit: y = -2.9114x + 46.569

Step-by-step explanation:

Plugging in your table into Excel, it turns out that y = -2.9114x + 46.569  provides a better fit of the data points into the line.  Please see the attached image for details.

Hope this helps.

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Step-by-step explanation:

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