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son4ous [18]
2 years ago
10

12+8y=28 slope intercept form

Mathematics
1 answer:
11111nata11111 [884]2 years ago
4 0

Answer:

y=2

Step-by-step explanation:

12+8y=28

subtract 12 on both sides

8y=16

divide both sides with 8

\frac{8y}{8} =\frac{16}{8}\\\\

y=2

plug in 2 for y back to the original equation to double check if its right

12+8(2)=28

28=28

hope this helps

idk theres an "x"

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2 years ago
What is the exact area and circumference?
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Answer:

Step-by-step explanation:

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2) Area of Circle 2:

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3) Area of Circle 3:

Radius = r = 15 km

Total angle in a circle = 360°

Given angle = 270

Ratio of given circle to complete circle = 270/360

=> 3/4

Therefore, the circle 3 is 3/4 of the complete circle with r = 15.

In this way, its area will be 3/4 of the complete circle.

Hence

Area = 3/4 (πr^2)

=> 3/4 (π*15^2 )

=> 3/4 (225π)

=> 168.75π   Hence answer is not provided that is option f

4) Area of Circle 4:

Radius = r = 6 km

Total angle in a circle = 360°

Given angle = 270

Ratio of given circle to complete circle = 90/360

=> 3/4

Therefore, the circle 4 is 3/4 of the complete circle with r = 6.

In this way, its area will be 3/4 of the complete circle.

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Area = 3/4 (πr^2)

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=> 3/4 (36π)

=> 27π   Hence answer is not provided that is option f

5) Circumference of Circle 1:

Radius = r = 12 mi

Total angle in a circle = 360°

Given angle = 90

Ratio of given circle to complete circle = 90/360

=> 1/4

Therefore, the circle 1 is 1/4 of the complete circle with r = 12.

In this way, its circumference will be 1/4 of the complete circle. In addition to that, its boundary will include the radius of both sides to make it a close shape.

Hence

Circumference = 1/4 (2πr) + 2r

=> 1/4 (2π12) + 2*12

=> 1/4 (24π) + 24

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Radius = r = 19 in

Total angle in a circle = 360°

Given angle = 315

Ratio of given circle to complete circle = 315/360

=> 7/8

Therefore, the circle 2 is 7/8 of the complete circle with r = 19.

In this way, its circumference will be 7/8 of the complete circle. In addition to that, its boundary will include the radius of both sides to make it a close shape.

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Total angle in a circle = 360°

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=> 3/4 (38π) + 38

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Total angle in a circle = 360°

Given angle = 270

Ratio of given circle to complete circle = 270/360

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Circumference = 3/4 (2πr) + 2r

=> 3/4 (2π6) + 2*6

=> 3/4 (12π) + 12

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