Who wrote the Principia Mathematica?

How was world war i's impact on russia similar to its impact on germany?

Nitella [24]

They both did a lot of damage for example they affected the economy & a lot of people died.

8 0

3 years ago

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What did Truman's executive order do?

Juliette [100K]

It abolished racial discrimination in the United States Armed Forces and eventually led to the end of segregation in the services.

5 0

3 years ago

What strategy did the Athenians use to fight during the Peloponnesian War? Was it a good

Alekssandra [29.7K]

Answer: The Walls Protecting Athens. The walls protecting Athens during the Peloponnesian War. Initially Athens' strategy, as guided by Pericles, was to avoid open battle with the more numerous, and better trained Spartan hoplites, and to instead rely on Athens' superior fleet.

Explanation: Yes.

6 0

3 years ago

Which is most challenging for developing countries?

Ivenika [448]

Answer:

Correct Answer:

economic and employment issues

Explanation:

In most developing countries found in the African and Asian continents, there are so many challenges which they encountered. Most important challenge is the economic and emloyment issues. economic issue due to the fact that, the economy is capitalist based economy.

Also, the economy tends to favour few who are able to live confortably over the majority who lives below the UN approved daily minimum wage. The economic issue is another challenge due to the fact that, majority of the citizens tend to be umemployed, under-employed etc. For example, in a population of 300 million, how many job would be created to cater for its citizens?

8 0

3 years ago

A carpenter purchased 70 ft of redwood and 80 ft of pine for a total cost of $351. A second purchase, at the same prices, includ

notsponge [240]

Hey there!!

Let us take the cost of 1 feet redwood as ' x '

Let us take the cost of 1 feet pine as ' y '

For the first scenario :

70 ft red wood and 80 ft pine

1 feet redwood - $x

70 feet redwood - $70x

1 feet pine - $y

80 feet pine - $80y

Total = $351

70x + 80y = 351 --------------------------------- ( 1 )

Second scenario :

1 feet redwood - $x

100 feet redwood - $100x

1 feet pine - $y

60 feet pine - $60y

total - $420

100x + 60y = 420 ----------------------- ( 2 )

Now let us get both the equations together :

70x + 80y = 351 ------------- ( 1 )

100x + 60y = 420 ------------- ( 2 )

Now let us multiply the the 1st equation with 3 and the 2nd equation with 4

3 ( 70x + 80y ) = 3 ( 351 )

4 ( 100x + 60y ) = 4 ( 420 )

............................

210x + 240y = 1053

400x + 240y = 1680

...........................

Now let us subtract the first equation from the second ...

400x + 240y = 1680

- ( 210x + 240y ) = - ( 1053 )

......................

190x = 627

dividing by 160 on both sides

x = 627 / 190

x = 3.3

The cost for 1 feet or per foot for the redwood is $3.3

Now substitute the value of x in any given given equation and find out y

I will substitute in the 1st equation

70x + 80y = 351

70 ( 3.3 ) + 80y = 351

231 + 80y = 351

Subtracting by 231 on both sides

80y = 351 - 231

80y = 120

dividing by 80 on both sides

y = 120 / 80

y = 1.5

The cost for 1 feet or per foot for the pine = $1.5

The answers - $3.3 ( redwood ) ; $1.5 ( pine )

Hope my answer helps!

8 0

4 years ago