Which of the following statements describes how a balance obtains a measurement A. A ruler is placed next to an object, and its length is noted.

B. An object is placed on one side and weights are placed on the other side until the two dishes are even.

C. The sides of an object are measured and multiplied to get the final measurement.

D. An object is placed in a cylinder, and the water displaced gives the measurement.

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.