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3 years ago

The population of a town is 15,000. It decreases at a rate of 8% per year. In about how many years

Mathematics

1 answer:

Paha777 [63]3 years ago

4 0

Answer:

Step-by-step explanation:

If a population is decreasing by 8% we can multiply the population by 92% (1-.08)

which means we have the following equation

population=15000(.92)ⁿ

where n is the number of years

we want to know when the population will be 10,000 so we write

10,000=15,000(.92)ⁿ

.66667=.92ⁿ

a rule we have is

$n=y^x\\log_yn=x$

which means that

$.66667=.92^n\\=log_{.92}.66667$

compute this and get

4.867

round this up to 5

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Answer:

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S 55°E

Step-by-step explanation:

Take the law if sines of a triangle:

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First solve for A, using the law of sines:

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Cross multiply:

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$A = 80.44 degrees$

Since A = 80.44° find A supplement, A`:

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Thus,

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Rewrite in bearing form:

S 75°E

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Sergeeva-Olga [200]

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Hence, the correct answer is B. $H_0:p_1=p_2$

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