A construction company with two black hose has contracted to dig a long trench for drainage pipes the larger black who can dig the entire trench by it self in 12 days the smaller Bracco can dig the entire trench by his self in 14 days the large black oh begins working on the trench by the south but after seven days it is transferred to a different job and a smaller black hole begins working on the trench how long will take the smaller bike how to complete the job

line or a linear equation graph

step-by-step explanation:

answer: haha (: i’ll go see what it is

step-by-step explanation:

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional