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jenyasd209 [6]
3 years ago
14

What is the radius for the circle given by the equation? 

Mathematics
1 answer:
alisha [4.7K]3 years ago
7 0

Use:

(a-b)^2=a^2-2ab+b^2\qquad(*)

x^2+y^2-6y-12=0\ \ \ \ |+12\\\\x^2+y^2-6y=12\\\\x^2+y^2-2y\cdot3=12\ \ \ \ |+3^2\\\\x^2+\underbrace{y^2-2\cdot y\cdot3+3^2}_{(*)}=12+3^2\\\\x^2+(y-3)^2=21\\\\\boxed{k=3}

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Answer:

x = -6

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Step-by-step explanation:

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he volume of the solid under a surface  

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and  

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−

x

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7

3

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Intersecting Region

The inequalities that describe D are given by the sketch as:  

1

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∫

−

x

3

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7

3

1

6

x

y

d

y

d

x

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6

x

[

y

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2

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−

x

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1

d

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3

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1

x

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y

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]

−

x

3

+

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3

1

d

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4

1

x

[

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9

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x

9

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1

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640

18

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896

27

+

256

36

)

−

(

40

18

−

14

27

+

1

36

)

]

=

23.25

.

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den301095 [7]

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