Astate has a limit on the lengths of cargo trains. the train cannot exceed a length of 1,100 ft. train a has 28 cars at 40 feet each, and train b has 34 cars at 30 feet each. do the trains meet the requirement?
a. train a and train b pass.
b. train a fails and train b passes.
c. train a passes and train b fails.
d. none of these

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

answer: do we write it

step-by-step explanation: