Answer: (2,-1)
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
Answer:
They won't load for me
Step-by-step explanation:
There are 80 children. 45 of them are girls. The amount of boys is equal to:

That means there are 45 girls and 35 boys.
The ratio of boys to girls is: 
Simplify:

Your answer is 7:9