Select a rst-year college student at random and ask what his or her academic rank was in high school. Here are the probabilities, based on proportions from a large sample survey of rst-year students: Rank Top 20% Second 20% Third 20% Fourth 20% Lowest 20% Probability 0.41 0.23 0.29 0.06 0.01 (a) What is the sum of these probabilities

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

c

step-by-step explanation:

at least i think its

n

step-by-step explanation:

step-by-step explanation: