Volunteers were 3/4 finished with the walkathon when they reached the 4 1/2-kilometer mark. how long was the walkathon?

6 km

Given,

The part of the race have finished =3/4

And, the distance of race have completed = 4 1/2

That is,

3/4 part of the race=4 1/2 km=9/2 km

4/3 x 9/2=  36/6=  6 km

Hence, the length of the marathon would be 6 km.

d. bc = 12 and ef = 16

step-by-step explanation:

we are given that δabc : δdef such that .

also, it is given that

so, from the options, we need that .

a.

b.

c.  

d.

as, we can see that only option d gives the same ratio as i.e. .

hence, the possible lengths are bc = 12 and ef = 16.

i dont know nkw

step-by-step explanation:

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