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Ludmilka [50]
2 years ago
10

What is the result of subtracting the second equation from the first? -2x+y = 0 -7x+3y = 2

Mathematics
1 answer:
Alex2 years ago
8 0

Answer:

-5x + 2y=2

Step-by-step explanation:

- 7x + 3y = 2 \\  - 2x + y = 0 \\ subtracting \: this.we \: have \\  ( - 7x \:  + 3y - 2) - ( - 2x + y) \\  - 7x + 2x + 3y - y - 2 \\  - 5x + 2y - 2 \\ therefore \: we \: have \\  - 5x + 2y = 2

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The general form of the equation of a circle is ax2 by2 cx dy e = 0, where a = b 0. if the circle has a radius of 3 units and th
aev [14]

The set of values which might correspond to the circle are A = 1, B = 1, C = 0, D = -8 and E = 7.

<h3>The equation of a circle.</h3>

Mathematically, the general form of the equation of a circle is given by;

(x - h)² + (y - k)² = r²

<u>Where:</u>

  • h and k represents the coordinates at the center.
  • r is the radius of a circle.

Based on the information provided that the center of the circle lies on the y-axis, we have:

(h, k) = (0, 4)

Radius, r = 3 units.

Substituting the given parameters into the formula, we have;

(x - 0)² + (y - 4)² = 3²

x ² + y² - 8y + 16 = 9

x ² + y² - 8y + 7 = 0.

Therefore, the set of values which might correspond to the circle are A = 1, B = 1, C = 0, D = -8 and E = 7.

Read more on circle here: brainly.com/question/1615837

#SPJ1

<u>Complete Question:</u>

The general form of the equation of a circle is Ax² + By² + Cx + Dy + E = 0, where A = B. If the circle has a radius of 3 units and the center at (0, 4), which set of values of A, B, C, D, and E correspond to the circle?

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2 years ago
Ignore this
marissa [1.9K]

Answer:

Thanks for free

Step-by-step explanation:

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Answer:

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If we fix our position in the vertex, we can do from one side, to the same side, a full rotation of 360°.

Now, if we only do an external rotation, this means, from one side to other side, we will do a rotation of 360° minus the interior angle:

this is:

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Below is an image as a guide of this.

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