3 years ago

What is the answer for x? 4/9x + 1/5x = 87

Mathematics

2 answers:

kati45 [8]3 years ago

6 0

Answer:

What is X in calculator?

Basically every scientific or graphing calculator will have a 1/x key, also known as the x^(–1) key, because some calculators display it this way answer is 13

marysya [2.9K]3 years ago

4 0

Answer:

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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erastovalidia [21]

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kkurt [141]

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3 years ago

The population of a certain species of bird in a region after t years can be modeled by the function P(t)= 1620/1+1.15e^-0.042t

natka813 [3]

Answer:

Step-by-step explanation:

The function is $\frac{1620}{1+1.15e^{-0.042t}}$

To find the maximum population, we need to set t towards infinity to get our answer.

So, we replace time with maximum ( $\infty$ ). Let's check:

$\frac{1620}{1+1.15e^{-0.042t}}\\=\frac{1620}{1+\frac{1.15}{e^{0.042t}}}\\=\frac{1620}{1+\frac{1.15}{e^{0.042(\infty)}}}\\=\frac{1620}{1+\frac{1.15}{\infty}}\\=\frac{1620}{1+0}\\=\frac{1620}{1}\\=1620$

The population of birds approaches 1620 as t goes towards infinity. So we can say the max population of the species is 1620.

Correct answer is A

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4 years ago

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