Answer:
equation;

Center (-4,2)
Radius is

Step-by-step explanation:
Since the x^2 and y^2 have the same coeffiecent this will be a circle in a form of

Where (h,k) is center
r is the radius
So first we group like Terms together

Add 7 to both sides


Since the orginal form of the equation of the circle has a perfect square we need to complete the square for each problem

and

so we have



To find our center, h is -4 and k is 2
so the center is (-4,2)
The radius is

So the radius is 3 times sqr root of 3.
Answer:
x=4
Step-by-step explanation:
2x-3=5
Add 3 to both sides
2x=8
divide both sides by 2
x=4
Answer:
-20x+27
Step-by-step explanation:
-4(5x-3)+15 Distribute First
-20x+12+15 Simplify
-20x+27 All Done!
I believe x is 0 because if we assume y and x are 0 then 0=0 and 0= 5 x 0
Answer:
The answer is x = -4/3
Step-by-step explanation: