Answer:
Step-by-step explanation:
<u>Inequalities</u>
To solve the inequality:
We need to perform the required operations on both sides of the inequality to have the variable w isolated.
First, we subtract 9:
Subtracting 6w:
Operating:
-7w>-1
Now we divide by -7 but recall that when dividing by a negative number, we must flip the inequality sign:
Operating:
Solution:
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>
Answer:
The volume of the cone is ≈ 301.59.
Step-by-step explanation:
The equation to use . You plug in 6 as the radius (r) and 8 as the height (h).