Why is it nessasary for engineers to know the precise location if each gps satellite in the system

Explanation:

It is necessary to know the precise location of each gps, because for applying the results of relativity theory engineers need the lowest error. Whichever error in the measurements of the position of the gps introduce great difference in real-time position of the users.

Relativity demands precision!!

hope this helps!

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.