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snow_lady [41]
3 years ago
13

Alexandria became the center for _____.

Social Studies
2 answers:
lilavasa [31]3 years ago
5 0
Im not sure about this question but i would have to say that philosophy and politics would really be the best answer for this type of question. 
11111nata11111 [884]3 years ago
4 0

Answer:

I know im rather late but the answer is Science and Philosophy ^^

Explanation:

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In which country does the government have the GREATEST influence over the economy?
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a plz mark as brailiest

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Suppose you find a rock that contains 10 micrograms of radioactive potassium-40, which has a half-life of 1.25 billion years. By
attashe74 [19]

Answer:

The rock is 3.75 billion years ago.

Explanation:

Given that:

Half life = 1.25 billion years

1 billion years = 10⁹ years

So,

Half life = 1.25 × 10⁹ years

t_{1/2}=\frac {ln\ 2}{k}

Where, k is rate constant

So,  

k=\frac {ln\ 2}{t_{1/2}}

k=\frac {ln\ 2}{1.25\times 10^9}\ year^{-1}

The rate constant, k = 5.5452 × 10⁻¹⁰ years⁻¹

Initial amount [A₀] = 80 micrograms

Final amount [A_t] = 10 micrograms

Using integrated rate law for first order kinetics as:

[A_t]=[A_0]e^{-kt}

So,  

10=80\times e^{-5.5452\times 10^{-10}\times t}

80e^{-5.5452\times \:10^{-10}x}=10

\frac{80e^{-5.5452\times \:10^{-10}x}}{80}=\frac{10}{80}

\ln \left(e^{-5.5452\times \:10^{-10}x}\right)=\ln \left(\frac{1}{8}\right)

x=\frac{10^{10}\times \:3\ln \left(2\right)}{5.5452}=3.75\times 10^9

So,

<u>The rock is 3.75 billion years ago.</u>

8 0
3 years ago
Which city became an important steamboat port in the 1800s?
ad-work [718]

Answer:

New Orleans

Explanation:

is your answer

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Which model of the press is most often associated with today's mainstream u.s. news media?
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Libertarian model of the press is most often associated with today's mainstream u.s. news media.

The philosophy of Libertarian model supports individuality and freedom of thought. No one is subject to authority, and everyone is free to express their views. Furthermore, there is no censorship, and the government has no right to impose restrictions on the media.

According to libertarian doctrine, media should be privately held. The philosophy supports individuality and freedom of thought. No one is subject to authority, and everyone is free to express their views. Furthermore, there is no censorship, and the government has no right to impose restrictions on the media.

To learn more about Libertarian model here,

brainly.com/question/21841792

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One of the results of the historical events depicted in the cartoon to the right
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I think it’s the very last one to redraw it’s borders,
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