Sara estimated that she could run for hours at a steady rate of 8 mi/hr. She enters a marathon which is a distance of 26 miles. How long should it take her to finish the race?

4 hours and 15 min

Explanation:

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Explanation:

Sara's estimated velocity 8 mi/hr.

distance = 26 miles

How long should it take her to finish the race?

time = distance / velocity

       =     26 miles    

             8 miles/hour

        =  3.25 hour

         = 0.25 hr x  60 min = 15 min

                                 1 hr

therefore, Sara will take 3 hrs. and 15 min to finish the race

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.