Answer:
The answer to part a is 3.6. I do not know about part b though.
Step-by-step explanation:
72-54= 18
18/5= 3.6
D because if it keep rotating it will never hit anything
Answer:
Step-by-step explanation:
x=# of boys, y=# of girls
after 24 boys have left, we have 3 times as many girls
y=3(x-24)
because there are the same number of girls as boys - we create this equation
x=y
then we can use substitution
y=3(y-24)
y=3y-72
-2y=-72
y=36
because there are 36 boys, that means there are also 36 girls - leaving you with 72 children in the beginning.
hope this helps!!