Answer:
Step one is incorrect
Step-by-step explanation:
Add 6 7 and two you get 15 xy subtract -11 and -4 you get positive 7xy add 15 and 7 and you get 22xy
Answer:
9 females
Step-by-step explanation:
Original ratio is 5:3 meaning to get 15 males you need to multiply by 3
which gives you 15 males.
Now do the same for females and multiply by 3 giving you your answer
9!
Answer:

Step-by-step explanation:
Given
See attachment
Required
The solution
The solution is at the point where the two lines meet.
The lines meet at:
and 
So, the solution is:
