The answer to the question is B
Answer:
Step-by-step explanation:
I don't know what systems you have to choose , but a system is:
18 = x+y
6 = x-y
x=12
y=6
so the boat moves at 12 miles per hour and the stream moves at 6 miles per hour
Answer:
144
Step-by-step explanation:
If u multiply 24 x4 it is 96 and when I multiply 12x4 is 48 and u add 96 plus 48 u get 144.
Answer:
19 3/4 in.
Step-by-step explanation:
Basiclly, you just need to add all of them up then divide that answer by how many numbers there are.