Answer:
Step-by-step explanation:
The general equation of a circle can be expressed as (x-a)²+(y-b)² = r² where (a,b) is the centre of the circle and r is the radius.
To show that the equation x² + y² +6y + 2 = 0 represents a circle, we need to write it in the format above using the completing the square method.
Given x² + (y² +6y) + 2 = 0
First we need to complete the square of the square in parenthesis by adding the square of half of the coefficient of y i.e 
to the equation and adding the constant to the other side of the equation as well.
x² + (y² +6y) + 2 = 0
<em>Hence the equation represents a circle with centre C at (0, -3) and radius of √7</em>
EDIT:
Order of operations doesn't matter in addition. So you can add them in any order.
Answer:
3 packs
Step-by-step explanation:
1 pack = $3
To see how many she could buy divide the money she has by how much each pack costs
9/3 = 3
$3 for each pack is the same as
3+3+3 = 6+3 = 9
Answer:
The answer is
<h2>
</h2>
Step-by-step explanation:
<h3>
</h3>
To solve the expression , use the rules of indices
Since the bases are the same and are multiplying we add the exponents
That's
<h3>
</h3>
So we have
<h3>
</h3>
We have the final answer as
<h3>
</h3>
Hope this helps you
