# Math-college

Combined, there are 178.
​Asians, Africans,​ Europeans, and Americans in a village.
The number of Asians exceeds the number of Africans and Europeans by 69.
The difference between the number of Europeans and Americans is 7.
If the number of Africans is​ doubled,
their population exceeds the number of Europeans and Americans by 23.
Determine the number of​ Asians, Africans,​ Europeans, and Americans in this village

Using a Matrix or matrices.

How many Asians:
Africans:
Europeans:
Americans:
In the village?

1. 👍 0
2. 👎 0
3. 👁 345
1. set this up with AS,AF,E,Am variables
As+0Af-E-Am=69
0As+0Af+E-Am=7
0As+2Af-E-Am=23
As+Af+E+Am=178

1,0,-1,-1,69
0,0,1,-1,7
0,2,-1,-1,23
1,1,1,1,178

row1+4>4
1,0,-1,-1,69
0,0,1,-1,7
0,2,-1,-1,23
2,0,0,0,247
something is wrong, we have a non-integer for number of Africans. Recheck the problem.

1. 👍 0
2. 👎 0
👨‍🏫
bobpursley

## Similar Questions

1. ### History

Which of these is an accurate comparison of the results of the Columbian Exchange? A: Europe benifited the most because ideas from the New World sparked the renaissance. B: Both Europeans and Native Americans benefited from the

2. ### Social Studies

Which statement beat explains why people in west Africa eat manioc? Europeans introduced manioc to Africa after encountering it in America. Early native Americans established trade routes with west Africans Manioc is native to

3. ### Social Studies

Which of the following accurately describes religion in Africa? 1.Most Africans are Muslim or adhere to indigenous beliefs 2.the majorities of Africans practice traditional African religion 3.A minority of Africans are Christian

4. ### Social Studies

What effects did the arrival of Europeans have on native Americans? A the arrival had little effect on native Americans. B Conquest and disease brought by Europeans changed the native american way of life forever C Native

1. ### History

How did Europeans justify controlling territory around the world? A.Europeans believed they needed international ports to transport goods. B.Europeans believed other territories wanted to be conquered. C.Europeans believed new

2. ### History

What effect did Europeans have on natives of the Americas? (Select all that apply.) A) Europeans brought technologies, ideas, plants, and animals that were new to America and would transform peoples’ lives. B)Europeans drained

3. ### History

3.How did Spanish colonies differ from French and English colonies? a.Missionaries sought to convert Native Americans to Christianity b.Peninsulares and creoles banned the slave trade, calling it immoral. c.The encomienda system

4. ### SS

a major reason for the establishment of new Spain and new France was to- A) promote religious freedom for Europeans*** B)spread Christianity among Native Americans*** C)enter into the fur trade with Native Americans D)enslave

1. ### History

How did New Imperialism impact the political development of Africa? African tribes began to follow the European lead and create empires of their own. Rival African tribes were sometimes placed in the same colony by European-drawn

2. ### History

Experts believe that most Native Americans died of diseases like smallpox, typhoid, or diphtheria in the first decades of contact with European settlers. Which statement best explains this phenomenon? Native Americans refused

3. ### Social Studies

What motivated most Africans Americans soldiers to fight in the Revolutionary War with the Patriots?

4. ### American History

What disadvantages did Native Americans experience in their trading with Europeans? Native Americans became reliant on European technology. Native Americans could not trade effectively because they lacked economic leaders. Native