kyasnead8189
03.08.2019 •
Mathematics
An animal reserve has 40,000 elk. the population increases 11% a year. how long tell the population is equal to 80,000
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Ответ:
Annual growth rate 11%
Need to reach 80,000 elks in n years:
P=A(1+r)ⁿ
80,000 = 40,000(1+0.11)ⁿ
80,000 = 40,000(1.1)ⁿ
Divide both sides by 40,000
2 = (1.1)ⁿ
ln(2) = n.ln(1.1)
0.693147 = n.(0.09531)
and n = 0.693147/0.09531
n = 7.27 years
Ответ:
It is one half the area of a rectangle with sides 6 units × 2 units