Let l, m, n e Z. Provide a direct proof for the following: If it is the case that I is an odd integer, and either mº is an even integer or I is an even integer (or both), and either mº is an odd integer or n +3 is an even integer (or both), then 2n + 7 is an odd integer. You should assume that odd and even are defined as presented in the videos. A proper setup should include a restatement of the conjecture, a valid argument, and a conclusion.

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

the answer is ! ?

idk wbu

step-by-step explanation: