Will give brainliest if its right

answer D

Step-by-step explanation:

A and C have to be equal

B and D have to be equal

A+B+C+D have to equal 360

so, two equations

5y-3=x+3y

4x+5y-3+x+3y=360

4x=156

x=39

5y-3=9+3y

2y=42

y=21

Hope this helps plz hit the crown :D

this is false ^.^ lol

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