What is 0.5 as a fraction

How many square feet of out door carpet will we need for this hole? 8ft 3ft 12ft 4ft

The general form of the quetion of a circle is ax^2+by^2+cx+dy+e=0 where a=b=0 if the circle has a radius of three units and the center lies on the y axis which set of values of a, b, c, d, and e might correspond to the circle

What is the location of point g, which partitions the directed line segment from d to f into a 5: 4 ratio? –1 0 2 3