-4x-2(8x+1)=-(-2x-10)

1 answer:

3 0

Answer: -6/11

-4x - 2(8x + 1) = -(-2x - 10) Distributive Property
-4x - 16x - 2 = 2x + 10 Combine like terms
-20x - 2 = 2x + 10 Subtract 2x from both sides
-22x - 2 = 10 Add 2 to both sides
-22x = 12 Divide by -22 for both sides
x = -6/11 Answer!

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Identify the radius and center.<br><br> x^2 + y^2 - 2x + 4y - 11 = 0

miss Akunina [59]

<h2>Hello!</h2>

The answer is:

Center: (1,-2)

Radius: 4 units.

To solve the problem, using the given formula of a circle, we need to find its standard equation form which is equal to:

$(x-h)^{2}+(y-k)^{2}=r^{2}$

Where,

"h" and "k"are the coordinates of the center of the circle and "r" is its radius.

So, we need to complete the square for both variable "x" and "y".

The given equation is:

$x^2+y^2-2x+4y-11=0$

So, solving we have:

$x^2+y^2-2x+4y=11$

$(x^2-2x+(\frac{2}{2})^{2} )+(y^2+4y+(\frac{4}{2})^{2})=11+(\frac{2}{2})^{2} +(\frac{4}{2})^{2}\\\\(x^2-2x+1)+(y^2+4y+4)=11+1+4\\\\(x^2-1)+(y^2+2)=16$