Which ratio forms a proportion with 5: 15?

A: 10:20
B: 75:5
C: 3:1
D: 1:3

D

Step-by-step explanation:

5/5 : 15/5

gives

1:3

it is a reproduction.

step-by-step explanation:

choice b is correct

step-by-step explanation:

we have been given the following system of linear inequalities;

we are required to graphically determine the solution to these system of inequalities. using a graphing tool, the solution is as shown in the attachment below;