In a dream, you land on a planet in a location such that all the stars you can see rotate in circular arcs in the sky, and they do not rise or set; a star directly overhead (your zenith) remains stationary. You then walk in one direction a distance of 3000 km to a location such that the stars you now see all set and rise at right angles relative to the E-W horizons. What is the circumference of this dream planet

answer: at 24 february, 2014 the population gets twice of its initial population.

explanation:

since we have given that

the population for alpha city, t years after january 1, 2004 is given as

first we find out the initial population, i.e. t=0,

so, our quadratic equation becomes,

according to question, we have said that if the population has twice its initial population, then it becomes

so, time taken to reach this above mentioned population is given by

now, we know that time can't be negative so, we take t=9.149 years.

hence, at 24 february, 2014 the population gets twice of its initial population.

more than, less

less than, more

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2