Let b and s be the velocity of the boat and stream respectively....
3(b-s)=27
b-s=9
b=9+s we will use this in the second equation....
2(b+s)=30
b+s=15, now use b found above in this to get:
9+s+s=15
2s+9=15
2s=6
s=3, and since from earlier b-s=9, b=9+s so
b=12
So the speed of the boat is 12mph and the stream is 3 mph
Answer:
4 and 9 hundreths
Step-by-step explanation:
Answer:
Did I do something wrong because you never did text me back
Step-by-step explanation:
$34
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Answer:
10
Step-by-step explanation:
the radius is from center out.