Runner a crosses the starting line of a marathon and runs at an average pace of 5.6 miles per hour. half an hour later runner b crosses the starting line and runs at an average rate of 6.4 miles per hour. if the length of the marathon is 26.2 miles which runner will finish ahead of the other? explain

Runner B

Step-by-step explanation:

d=rt

Runner A:

Runner B:

Since Runner B is starting 30 minutes later, you can add 30 minutes to his total time:

245.5 minutes + 30 minutes = 275.5 minutes

Thus Runner B will finish before Runner A

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:

i think the answer would be c