Answer:
28.57142857
%
Step-by-step explanation:
Convert the fraction to a decimal, then multiply by 100
.
28.57142857
%
Answer:
C & D
Step-by-step explanation:
Because A&B are wrong
My opinion about this answer is 7
Answer: Yes
Step-by-step explanation:
First multiply the first equation by three to get 3x+12y=69
Then subtract 12y from both sides of the second equation
Then add the first system and the second like this:

Because 0≠70, the system has no solutions