How long will a bus take to travel 150km at an average speed of 40km/h​

the bus will take 3.75 hours

Explanation:

distance = 150 km

avg. speed = 40 km/h

=>

=>

time taken = 3.75 hours

increase masses, decrease separation

answer;

d. are made mostly of liquid

explanation;

-the general   composition and structure planets includes; they have a thick gas and liquid layer covering a small,solid core. mostly the gases are hydrogen and helium atmosphere and layers of liquid hydrogen. for instance neptune and uranus are examples of the outer planets, they have a core covered by ice and ammonia.

-neptune's atmosphere is hydrogen and helium with a bit of methane so there is no oxygen to breath and the interior is made up of frozen water and ammonia with a rock and iron core. thus, there is no liquid water or solid surface to survive.