9. For a store contest, 5 out of every 65 people who visit the store will receive a free DVD. If 455 people visit the store, how many free DVDs will be given away? Set up equivalent ratios. Use a domino! +​

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.

d. 145*2 is 290 than the total angle is 360 then minus 290 then divide by two