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:
1.375
Step-by-step explanation:
3/4 is 0.75,
5/8 is 0.625
so 0.75 + 0.625=1.375
It’s either a or b i’m not sure
Answer:
90%
Step-by-step explanation: