Answer:
A.
Step-by-step explanation:
When you substitute the coordinates to its corresponding variables, you can compare that answer choice A. is accurate compared to the other answer choices.
108 miles 3 hours = 36 mph upstream
108 miles 2 hours = 54 mph downstream
bv = boat velocity in still water
cv = current velocity
bv -cv = 36
bv +cv = 54 Adding both equations
2*bv = 90
boat velocity in still water = 45 mph
since bv + cv = 54
then we know the current velocity = 9 mph
Answer:
Count
Step-by-step explanation:
Suppose that each day double 2, second day , will double 4, and for third day it's 16, etc.
For like those questions, just count.
Those questions are very simple, but other questions not like those, is not too simple.
Step-by-step explanation:
ofc , so that is that and the other is that