Which coefficient matrix represents a system of linear equations that has a unique solution?

mark branliest

step-by-step explanation:

.6 is 1/2 of 12

the answer is actually d. i just took the test

center (1,3) with radius 6

step-by-step explanation:

we must complete the square to find the center and radius of the circle.

first make sure the x and y squared terms have 1 as their coefficients. we also make sure x and y terms together.

we now create space between the x and y terms with parenthesis.

we complete the square by taking the middle terms -2x and the -6y - divide each and square them.

we add the squares to both sides.

simplify.

and write the quadratics in factored form.

the center is (h,k) or (1,3). the radius is the square root of 36 which is 6.

believe it or not anna is correct good job anna give me a fist bump there u go gal