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3 years ago

Anyone please help !!

Mathematics

1 answer:

yuradex [85]3 years ago

8 0

Answer:

The answer for the first problem is B. The answer to the second problem is A.

Step-by-step explanation:

Explanation for first problem: Factor the equation and get (w+5)(w-4). Then multiply the numerator of the equation (w-3) by (w-4) and get w²-7w+12.

Explanation for second problem: Plug in the values of choice A., -2 and 4, and they cause the denominators to equal 0 which is against the rules or considered illegal.

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B) 100.42 years.

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We have been given that the population of the world was 7.1 billion in 2013, and the observed relative growth rate was 1.1% per year.

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Now let us solve for t using logarithm.

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B) Now we will find the number of years it will take the population to be triple of its size.

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$\frac{7.1 \times 3}{7.1} =(1.011)^{t}$

$3 =(1.011)^{t}$

Now let us solve for t using logarithm.

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$1.0986122886681097 =t \cdot 0.0109399400383344$

$t=\frac{1.0986122886681097}{0.0109399400383344}$

$t=100.4221490079915311298\approx 100.42$

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