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3 years ago

The two most important pieces of information are the and the .

1 answer:

4 0

1. Monita de obsidiana. Sala Mexica
2. Máscara del Dios Murciélago. Sala Oaxaca
3. Máscara de Pakal. Sala Maya

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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

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

$1 + r = 0.9187$

$r = 0.9187 - 1$

$r = -0.0813$

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

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

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

horrorfan [7]

Answer and Explanation:

The statement presented in the sentence above is really empty, because it is not correct.

The processing stage of systems theory is formed by the concepts that limit and create the systems goals. These concepts are formed by non-formal institutions, which are responsible for creating the rules, concepts and ideas of societies. It is these elements that limit a system and determine the objective that will be achieved through the system, especially in relation to systems created by human beings. In this case, non-formal institutions are primarily responsible for creating the processing phase of systems theory.

6 0

3 years ago

What is one way people are trying to save vultures??

Mekhanik [1.2K]

One way people are trying to save vultures is they are feeding them healthy food not food that can kill them

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3 years ago

Read 2 more answers

Which two achievements suggests progress in agriculture?

Citrus2011 [14]

Answer: The invention of the agricultural machine such as thresher, the green revolution.

Explanation:

The invention of the agricultural machinery of the peasants contributed to the development of farming activity. Scottish inventor Andrew Meikle designed the rig. This machine has made it easier to operate and increase productivity. The jigsaws, which separated the grain from the straw, became more efficient after 1850 when farmworkers hooked up the steam engines that propelled them.

In 1960, a green revolution occurred. Many high-yielding species have been invented to increase wheat and rice production, especially in densely populated countries such as India and China. Critics have argued that such a process is destroying the environment due to the excessive use of fertilizers and concentrating on only a few species. More recently, farmers have been rediscovering traditional farming methods and the use of organic fertilizers and pesticides.

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3 years ago

Which word best describes a busybody who thrusts himself or herself into a situation and asks a lot of nost quetions?

densk [106]

A person who is being described as a busy body and usually thrusts his or herself in specific situations and these individuals most likely ask a lot of nosy questions are called intrusive. A person who is intrusive are usually the ones who are noisy as they cause disruptions and annoyance to people around them.

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3 years ago