Match the items below with the correct type of supernova.

MSS:

WD:

Can only occur in a galaxy with ongoing star formation.

Can only occur in a binary system.

Star explodes completely, leaving no compact object behind.

Black hole or neutron star left behind.

Spectra always lack strong hydrogen lines.

Has a brighter peak luminosity.

Can occur in a very old star cluster.

the answer is a)

mark brainliest

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.