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JulsSmile [24]
2 years ago
5

Encontrar las coordenadas del centro y la longitud del radio de la circunferencia 9x²+9y²+18x-12+10=0

Mathematics
1 answer:
bearhunter [10]2 years ago
7 0

Answer:

Step-by-step explanation:

The standard form of equation of a circle is expressed as;

x^2+y^2+2gx+2fy+c = 0

The centre is at (-g, -f)

Given the equation'

9x²+9y²+18x-12+10=0

Divide through by 9

9x²/9+9y²/9+18x/9-12y/9+10/9=0

x^2+y^2+2x-4/3 y + 10/9 = 0

Compare

2gx = 2x

g = 1

2fy = -4/3 y

2f = -4/3

f = -4/6

f = -2/3

The centre is (-(-2/3), -1) = (2/3, -1)

for the radius

r = √f²+g²-c

r =√(-2/3)²+1²-10

r =√4/9 - 9

r = √(4-81)/9

r = √-77/9

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IRINA_888 [86]
The answer is (4x+3y=4 2x-7=7: 5/2 and y=-2) hope it helps and have a good day!
4 0
3 years ago
Y-8= - * - 4<br> y=-*<br> 4<br> (3,-5)<br> no solution<br> an infinite number of solutions
muminat

Given:

The system of equation is

y-8=-\dfrac{1}{3}x-4

y=-\dfrac{1}{3}x-4

To find:

The solution of given system of equations.

Solution:

The slope intercept form of a line is

y=mx+b

Where, m is slope and b is y-intercept.

Write the given equation in slope intercept form.

The first equation is

y-8=-\dfrac{1}{3}x-4

y=-\dfrac{1}{3}x-4+8

y=-\dfrac{1}{3}x+4              ...(i)

Here, slope is -\dfrac{1}{3} and y-intercept is 4.

The second equation is

y=-\dfrac{1}{3}x-4              ...(i)

Here, slope is -\dfrac{1}{3} and y-intercept is -4.

Since the slopes of both lines are same but the y-intercepts are different, therefore the given equations represent parallel lines.

Parallel lines never intersect each other. So, the given system of equation has no solution.

Hence, the correct option is B.

3 0
3 years ago
Four buses were filled with children and 20 children rode in cars for a field trip. If each bus can hold 58 children, how many w
Wewaii [24]
The correct answer to your question is 252 children
8 0
3 years ago
M=F+Frt<br><br> solve for t...
Aliun [14]

Answer:

m=f+Frt

M=f(1+rt)

M\1+rt=F

4 0
2 years ago
Lea wants to save money on a new computer. At the store near her, the computer she wants is listed at a regular price of 400.00.
Kaylis [27]

Answer:

280

Step-by-step explanation:

400.00-40%=280

7 0
3 years ago
Read 2 more answers
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