1.Se tiene 7 bandeloras de diferentes colores, ¿Cuantas señales diferentes se podrán hacer si izamos tres de ellas ala ves en un mismo mástil? 2.Cuantas palabras diferentes, tengan sentido o no, se puede formar con todas las letras de la palabra QUIQUIRIQUI? 3.Para hacer señales, en un barco, se dispone de 8 banderas de diferentes colores, ¿Cuántas señales se pueden enviar empleando 4 banderas?

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.

96.77 amp

explanation:

rl = 250/100 = 2.5 ohms.

egl = 250 + (100 × 0.1) + 2 = 262 v.

at 700 r.p.m., eg2 = 262 × 700/1000 = 183.4 v.

if ia is the new current, then eg2 - 2 - (ia × 0.1) = 2.5 ia

which means this will give ia = 96.77 amp.