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Ratling [72]
3 years ago
6

Please help!! I don’t know how to find the equation of a circle. Tell me how you got the answer , thank youuuu

Mathematics
2 answers:
LekaFEV [45]3 years ago
8 0

Check the picture below.

\bf \textit{equation of a circle}\\\\ (x- h)^2+(y- k)^2= r^2 \qquad center~~(\stackrel{0}{ h},\stackrel{-3}{ k})\qquad \qquad radius=\stackrel{2}{ r} \\\\[-0.35em] ~\dotfill\\[1em] [x-0]^2+[y-(-3)]^2=2^2\implies x^2+(y+3)^2=4

zhenek [66]3 years ago
7 0

Answer:

x^2  + (y + 3)^2 = 4

or

x^2 + y^2 + 6y + 5 = 0.

Step-by-step explanation:

We see from the diagram that the center of the circle is at (0, -3)  and radius is 2.

The general form for a circle is  (x - a)^2 + (y - b)^2 = r^2  where  (a, b) is the center and r = the radius.

So substituting the given values the equation is:

(x - 0)^2 + (y - -3)^2 = 2^2

x^2  + (y + 3)^2 = 4  (answer).

If you want it in expanded form it is

x^2 + y^2 + 6y + 5 = 0.

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I need help i dont understand this
Ad libitum [116K]

The answer is B)x+y=y+x.

This is just changing the order of the numbers to get the same equation....\

So for example if I have 2+7 and I use the property of addition It would give me 2+7=7+2.

Pls mark brainliest if this helped!

7 0
3 years ago
Please I need help
solong [7]

9514 1404 393

Answer:

  (c)  27x^11 +51x^7 +9x^6 -60x^5 +17x^2 -20

Step-by-step explanation:

As with many multiple-choice questions, you only need to look at something that will discriminate the correct answer from the wrong one.

The highest-degree product term is the product of the highest-degree terms in the factors:

  (3x^5)(9x^6) = 27x^11

This matches choice C only.

_____

In case you're interested in actually performing the rest of the multiplication, the distributive property applies.

  (1 +3x^5)(17x^2 +9x^6 -20)

  = 1(17x^2 +9x^6 -20) +3x^5(17x^2 +9x^6 -20)

  = 17x^2 +9x^6 -20 +51x^7 +27x^11 -60x^5

Writing these terms in order of decreasing exponents gives ...

  = 27x^11 +51x^7 +9x^6 -60x^5 +17x^2 -20

7 0
2 years ago
Plz help fast solve this
torisob [31]

Answer:

3

1

2

Step-by-step explanation:

Math simplification

4 0
2 years ago
Read 2 more answers
What attribute do a rectangle, parallelogram, rhombus, and square ALL have in common?
Vikki [24]

B

my answer has to be at least 20 letters.....

8 0
2 years ago
1. The spinner shown has six congruent sections.
kondaur [170]

Answer:

B

Step-by-step explanation:

The probability of obtaining a 3 is

P(3) = \frac{1}{6}

Then after 30 spins the predicted number of times it should land on 3 is

30 × \frac{1}{6} = 5

8 0
2 years ago
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