Answer:
Radius of the given circle is r = 2.
Step-by-step explanation:
Given equation of the circle is .
Now we need to find the radius of the given circle .
To find that let's compare with the formula of the circle with is , where r is the radius.
We get
take square root of both sides.
Hence radius of the given circle is r = 2.
Answer:
y = - 8
Step-by-step explanation:
y - 16 - 3y = 0
Group like terms
y - 3y - 16 = 0
Add similar elements: y - 3y = - 2y
- 2y - 16 = 0
Add 16 to both sides
- 2y - 16 + 16 = 0 + 16
Simplify
- 2y = 16
Divide both sides by - 2
=
Simplify : y
Apply the fraction rule:
=
Divide the numbers:
= y
Simplify : - 8
Apply the fraction rule:
Divide the numbers: = 8
= - 8
y = - 8
