Mail carriers in a large city are divided into four groups according to gender and according to whether they walk or ride on their routes.
Then 10 are selected from each group and interviewed to determine
whether they have been bitten by a dog in the last year.
A Cluster
B Systematic
C) Stratified
D) Convenience
E Random

3.76%

step-by-step explanation:

7

step-by-step explanation:

the system of inequalities is

step-by-step explanation:

step 1

find the equation of the dashed line

we have the points

(0,0) and (3,1)

the line passes through the origin, so, is a direct variation

find the slope

the equation of the dashed line is

the solution of the inequality a s the shaded area above the dashed line

therefore

the equation of the inequality a is

step 2

find the equation of the solid line

we have the points

(4,0) and (0,4)

find the slope

the equation of the solid line is

the solution of the inequality b s the shaded area below the solid line

therefore

the equation of the inequality b is

step 3

the system of inequalities is