Convert -40° into radians

(- 2π) / 9 radians

Step-by-step explanation:

The conversion ratio is          or    π  radians : 180 degrees =  1

-40  degrees  *  (  π radians / 180 degrees) =   (- 2π) / 9 radians

lockers 1, 4, 9, 16, 25, 40, and 49 are open

i ran through it by the other answer is wrong

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.