A ship sailed 30 kilometers in 1 1/2 hours. What is was its rate in kilometers per hour? 1) 20
2)30
3)45
4)90
5)Not enough information is given.

20km/hr

Step-by-step explanation:

Given that a ship sailed 30km in one and a half hours. We need to find out the rate of ship in kilometres/hour . The rate is also called Speed.

Speed:- Distance travelled per unit time is called Speed .

Here , according to Question,

Distance = 30 km

Time = 1½ hrs .

We know that ,

Subsequently ,

Substitute the respective values ,

We can write 1.5 as 3/2 , therefore ,

Simplify the RHS ,

Hence the Rate/Speed of the ship is 20km/hr .

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individuals should refuse to cooperate with institutions they believe unjust.

thoreau felt  that governments were more often agents of corruption than justice, even democracies, and that just because the majority feels a certain way does not make it just or correct in absolute terms. he uses the fact that slavery exists in our democracy to support this idea.

he goes on to say that, as a result, people should live true to their own internal laws regarding right and wrong, as a product of reflection and a moral life, rather than following every law that society imposes. 

step-by-step explanation:

the answer is two. hope this !