What fraction is bigger 7/18 or 1/3 and why?

Find the zero function by factoring (try to show work) h(x)=-x^2-6x-9

If the endpoints of the diameter of a circle are (8, 6) and (2,0), what is the standard form equation of the circle? a) (x + 5)2 + (y + 3)2 = 18 (x + 5)2 + (y + 3)2 = 3.72 (x - 5)2 + (y - 3)2 = 18 d) (x - 5)2 + (y - 3)2 = 32

Could someone me with this question i’ve been stuck on it for 20 minutes