It is centered at (h,k) --> (0,0) and has a radius 9
The equation of the circle is

Hope that helps!
Answer:
x = -9
Step-by-step explanation:
You are solving for x. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS.
First, subtract 7 from both sides:
2x + 7 (-7) = -11 (-7)
2x = -11 - 7
2x = -18
Next, divide 2 from both sides:
(2x)/2 = (-18)/2
x = -18/2
x = -9
x = -9 is your answer.
~
Answer: 7.867 x 10^8
Step-by-step explanation:
(the “^8” is an exponent of 8)
Answer:
1) 3, 4
2) . 1, 2, 3, 4, 5, 6
3) 5, 6
4) . 1, 2, 5, 6
Step-by-step explanation: