Recall your d = rt, distance = rate * time.
going forth and back is 80 miles, thus upstream as well as downstream is just 80 miles.
now, bear in mind that say, the boat has a "still water" of "b", when going downstream, is not going "b" fast is going "b+7" because the current's is adding to it, likewise when is going upstream is going "b-7" because is going against the current and thus the current is eroding speed from it.
now, the whole trip took 3 hours and 20 minutes, bearing in mind that 20 minutes is 1/3 of an hour, so is 3 and 1/3 hours, or 10/3 of hours.
if say it took "t" hours going down, then going up it took the slack from 10/3 and "t", that is, it took "10/3 - t".
Answer:
RU=4.44500 cementers
Step-by-step explanation:
I learned from my bigger sister
Answer:
Step-by-step explanation:
1) 9.5 x 0.14
= 19/2 x 7/50
= 133/100
= 1.33
9.5 - 1.33
= <u><em>8.17</em></u>
<u><em></em></u>
2) 60 - 46.20 / 60
= 13.80 / 60
= 0.23
= <u><em>23% decrease</em></u>
5* x * y simplified is 5xy