If 2 out of every 20 ducks were banded, what percent were not banded?

if 2 were banded that means 18 out of 20 were not banded

 18 divided by 20 = 0.9

 so 90% were not banded

1.4

2.3

step-by-step explanation:

the formula for the constant of variation is

y= kx

divide each side by x

y/x =kx/x

y/x =k

we know a and y

1.   y/x = k

4/1 =4

check the other values to make sure they are the same

8/2 = 4   12/3 =4   and 16/4 =4  

the constant of variation is 4

2.   y/x = k

3/1 =3

check the other values to make sure they are the same

6/2 = 3   9/3 =3   and 12/4 =3  

the constant of variation is 3

i think the answer is .36

step-by-step explanation:

what i did was only 2.88 divided by 8