Answer:
n log(m)
Step-by-step explanation:
I would use the quadratic formula, as no other method comes to mind at the moment.
The annual multiplier of the population is 1 +2.7% = 1.027. So, after x years, the population is multiplied by 1.027^x. You want to find the value of x that makes this multiplier be 2.
2 = 1.027^x
log(2) = x*log(1.027)
Then, at a growth rate of 2.7%, the doubling time of the population is
x = log(2)/log(1.027) ≈ 26.02 . . . . . . the number of years after 1987
The population of Country A is expected to be double its 1987 value in the year 2013.
Answer:
3
Step-by-step explanation:
15:5
9:HE
15/5 = 9/HE
15HE = 45
HE = 3
