A certain circle can be represented by the following equation. x^2+y^2+18x+14y+105=0 What is the center of the circle? What is the radius of the circle?

See below.

Step-by-step explanation:

Recall the equation for a circle:

, where (h,k) is the center and r is the radius.

We need to turn the given equation into the above format. We do this by completing the square.

First, group them:

For the first section, complete the square for :

Do the same for the second:

All together:

The center is (-9,-7).

The radius is

answer: $34.31

step-by-step explanation:

$11.99 x 3 = $35.97

$35.97 - 10% = $32.37

$32.37 + 6% = $34.31

details

step-by-step explanation: