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haha thats what i did , but how can speed be 0km/hr

A cargo service operates by running a ship between port a and port b at a constant speed of v kilometres per hour For a given v, the cost per hour of running the ship is 9000+10v^2 dollars. Find the value of v which minimises the cost of the trip ANS: 30

i think you should just go for it, aiim for the stars and if u miss youll atleast hit the moon, and if u miss the moon ull get lost in space

Can i please have advice on what subjects to drop? I'm in yr 11, turning yr 12 soon and I have a choice to drop out of 3 choices. Ancient History Japanese Physics . I enjoy all 3 subjects but I think I will not be able to handle the workload in Year 12 I am proficient at all 3...