Solve using elimination -x+3y=4 and -x+6y=10

Hot summers and cold winters best define a _________climate region

bonufazy [111]

Correct answer is C. humid continental

3 0

2 years ago

You are an archaeologist who uncovers a new site of early human activity. Currently, there is evidence of humans living in this

TiliK225 [7]

Answer:

It means that humans lived in that area longer than expected, approximately 28,650 years ago.

Explanation:

Ok, this coud be tricky especially taking in count that Radiocarbon dating has other variables that archaeologist take into account so this answer should be taked as an approximation.

Radiocarbon dating measures the amount of carbon-14 (an isotope) in organic objects like bones, plants, wood, charcoal etc...

This is possible because the atmosphere is constantly producing carbon. While a human, animal or tree/plant is alive its amount of carbon is the same as that of the atmosphere. When they die, their amount of carbon kind of "freezes", because it doesnt renew.

Carbon-14 has a peculiarity, every 5730 years its amount in organic objects is cut in half (50%), so for example if the amount of carbon-14 in a dog is 5000 the day it dies, and today the amount found in his skull/bones is 2500, it means that this dog died 5730 years ago.

So for the question:

If a current skull contains a carbon 14 count of 10,000 and the fossil found in the archeological site contains 312.5 we candapproximately find how long ago this human died:

We start by halving 10,000 till we reach the amount found in the skull which is 312.5

$\frac{10,000}{2} = 5,000$

$\frac{5,000}{2} = 2,500$

$\frac{2,500}{2} = 1,250$

$\frac{1,250}{2}= 625$

$\frac{625}{2} = 312.5$

We halved 5 times, so we multiply this five times by 5730 and we get 28650

Which means this human died 28650 years ago, and proves that early human settlers lived in that area for longer than we had on record.

5 0

3 years ago

Which of the following countries was not one of the “Big-3” at the Paris Peace Conference?

Liula [17]

1. For the choices, the country that was not one of the “Big-3” at the Paris Peace Conference is letter D which is Germany. 2. Among the choices provided the terms that describes the spread of Influenza across Europe after the war is letter D or the Pandemic. <span>
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7 0

3 years ago

Read 2 more answers

How would Confucius answer the question of who should regulate the family?

Andrej [43]

MOTHER,................

3 0

3 years ago

Read 2 more answers

What social and economic consequences accompanied the United

Mariana [72]

Answer:

The American economy experienced, from the development of the Industrial Revolution and in particular after the War of 1812, a process of reconversion of its productive systems, which until then were eminently agrarian, to become predominantly industrial in the north of the country, based on the production of steel, the construction of ships, the elaboration of manufactures, and the industrialized exploitation of natural resources. This situation resulted in the development of a salaried social class, which went from working in their own fields to working in dependence for the owners of the industries, in exchange for a fixed monthly wage.

This meant a series of social changes in the nation, which had a decisive impact on the country's politics, economy, and culture. Thus, on the one hand, most of the wealth was transferred to the large cities of the north, while the main production centers were located there. This caused a huge migration by rural workers to the cities, which ended up determining the big city status of places like New York, Philadelphia, Pittsburg, Cleveland, Detroit or Boston, among other cities.

In addition, it motivated the creation of an urban middle class, which did not own the means of production but was not immersed in poverty, that worked in these industries.

On the other hand, this development caused the tensions between the north and south of the country, as it was a clash for two well differentiated lifestyles: urban and industrial in the north, against rural and agricultural in the south.

4 0

4 years ago