What is the center of the circle with the equation (x-1)2 + (y-3)2= 9?
a: (1,3)
b: (-1,3)
c: (-1,-3)
d: (1,-3)

Answ letter a. (1, 3)

Step-by-step explanation:

The answer to your question is the letter a. (1, 3)

Step-by-step explanation:

Equation

                     (x - 1)² + (y - 3)² = 9

The Standard form of the circle

                     (x - h)² + (y - k)² = r²

In the standard form of the circle, the center is the letters (h, k) and the radius is r.

So, for this problem, the center is  h = -1  and k = -3, but there is a rule that says that we must change the signs, so the center is

                                                                                        (1, 3)

6.9

step-by-step explanation:

simple math really

6 1/2 times 0.6 = 3.9

but if you are just doing 6 and not 6 1/2 then the answer is 3.6