Consider this option:
1. if to re-write the condition, it is given: total time t=8 hours; upstream=downstream=6 miles; V_boat=4 m/h., V_current=V=?
2. note, that total time=time_upstream+time_downstream, where time_upstream=6miles/(V_boat-V) and time_downstream=6miles/(V_boat+V). Using this it is possible to make up and solve the following equation:
answer: √10
P.S. the roots of the equation are √10 and (-√10), only positive values is needed for V.
Answer:
I think its 10
Step-by-step explanation:
hope this helps
Answer:
Two cubes of gold one is 24 m per side
Step-by-step explanation:
1: 48
2: 18
3: 73
Hope this helps you!