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3 years ago

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Please answer number 52

1 answer:

statuscvo [17]3 years ago

7 0

Answer:

yo whats yo question

Explanation:

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7 years ago the population was at 1720 and today only 950 of the birds are alive. Once the population drops below 150, the situa

Harrizon [31]

Answer:

This will happen in 28.79 years.

Explanation:

The population, after t years, is given by the following equation:

$P(t) = P_{0}(1 + r)^{t}$

In which $P_{0}$ is the initial population and r is the rate of change. If r is positive, the population increases. Otherwise, if r is negative, the population decreases.

7 years ago the population was at 1720 and today only 950 of the birds are alive.

This means that $P_{0} = 1720$ and $P(7) = 950$ . With this, we can find r. So

$P(t) = P_{0}(1 + r)^{t}$

$950 = 1720(1 + r)^{7}$

$(1+r)^{7} = \frac{950}{1720}$

$(1+r)^{7} = 0.5523$

To isolate 7, i apply the seventh root to both sides. so

$\sqrt[7]{(1+r)^{7}} = \sqrt[7]{0.5523}$

$1 + r = 0.9187$

$r = 0.9187 - 1$

$r = -0.0813$

So

$P(t) = 1720(1 - 0.0813)^{t}$

$P(t) = 1720(0.9187)^{t}$

Once the population drops below 150, the situation will be irreversible. When will this happen?

This is t when P(t) = 150. So

$P(t) = 1720(0.9187)^{t}$

$150 = 1720(0.9187)^{t}$

$(0.9187)^{t} = \frac{150}{1720}$

$(0.9187)^{t} = 0.0872$

It is important to know that:

$\log{a^{t}} = t\log{a}$

So we apply log to both sides

$\log{(0.9187)^{t}} = \log{0.0872}$

$t\log{0.9187} = \log{0.0872}$

$t = \frac{\log{0.0872}}{\log{0.9187}}$

$t = \frac{-1.0595}{-0.0368}$

$t = 28.79$

This will happen in 28.79 years.

4 0

4 years ago

What belief is implied but not explicitly stated in this excerpt?.

aivan3 [116]

This answer was deleted by a Brainly Staff Member for violating our Terms of Service.

5 0

2 years ago

Which states wanted slaves to be counted as part of their population?

saveliy_v [14]

answer is d hope this helps

7 0

3 years ago

Read 2 more answers

Jasmine is always complaining that she doesn't like the way she looks. She tells her friend Amber that she thinks her thighs are

Nikolay [14]

Answer:

b. a negative body image

Explanation:

A negative body image -

It is a type of disorder , as how the person look at himself .

This most commonly observed in womens than in mens .

The people suffering from this disorder always dissatisfied from the their type , always complaining and criticizing their body.

<u>The symptoms of this disorder are as follows - </u>

Frequently comparing their body with others.

Always complaining

obsessive self-scrutiny in mirrors

Hence, from the given scenario of the question,

Jasmine is suffering from a negative body image .

7 0

3 years ago

A poll of registered voters as to which candidate they support

stira [4]

Nominal! Hope this helps for your answer!

7 0

4 years ago