Out of 270 racers who started the marathon, 240 completed the race, 21 gave up, and 9 were disqualified. What percentage did not complete the marathon?

guess at question:

a vertical line intersects the graph of g(x,y) = 0 at two points. what conclusion follows about the function f(x) implicitly defined by g(x,f(x)) = 0?

the domain of f(x) cannot include the x coordinate of any such vertical line.

informally, f(x) is not a function, and

g(x,y)=0 cannot be solved for y uniquely.

the relation r = {(x,y) such that g(x,y) = 0} is a function if

for all (a,b) ∊ r and (c,d) ∊ r, a=c implies b=d.

step-by-step explanation:

-81 -56 -27 0 81

step-by-step explanation:

yes.. it's proven to be 36.

4n=2m

ratio of m to n: 2/4 = 1/2

answer

a. 1/2