B. -3
The value of a for given polynomial is -3
<h3>
Explanation:</h3>
<em>Factor theorem for polynomials,</em>
<u><em>If (x-c) is a factor of polynomial f(x), then f(c)=0</em></u>
Given: x+a is a factor of polynomial 
Let 
By Factor theorem, since x+a is a factor of f(x),
![(x+a)=[x-(-a)]\\So,\ f(-a)=0](https://tex.z-dn.net/?f=%28x%2Ba%29%3D%5Bx-%28-a%29%5D%5C%5CSo%2C%5C%20f%28-a%29%3D0)
Substituting 
in f(x)=0, we get
![f(x) = 4x^3-13x^2-ax = 0\\f(-a)= [4(-a)^3]-[13(-a)^2]-[a(-a)] = 0\\(-4a^3-13a^2+a^2)=0\\(-4a^3-12a^2)=0\\-4a^3=12a^2\\\frac{a^3}{a^2} =\frac{12}{-4} \\\\a=(-3)](https://tex.z-dn.net/?f=f%28x%29%20%3D%204x%5E3-13x%5E2-ax%20%3D%200%5C%5Cf%28-a%29%3D%20%5B4%28-a%29%5E3%5D-%5B13%28-a%29%5E2%5D-%5Ba%28-a%29%5D%20%3D%200%5C%5C%28-4a%5E3-13a%5E2%2Ba%5E2%29%3D0%5C%5C%28-4a%5E3-12a%5E2%29%3D0%5C%5C-4a%5E3%3D12a%5E2%5C%5C%5Cfrac%7Ba%5E3%7D%7Ba%5E2%7D%20%3D%5Cfrac%7B12%7D%7B-4%7D%20%5C%5C%5C%5Ca%3D%28-3%29)
Therefore, value of a is (-3)
Answer:
a Jackson supporter.
Explanation:
This statement shows that William Marcy was a supporter of Andrew Jackson's policies. Spoils in this context means earned benefits as Andrew Jackson rewarded his supporters with government jobs. Marcy was actually defending one of Jackson's appointments when he made this statement.
So marcy is obviously a supporter because he is obviously trying to say that those who supported Andrew Jackson should be the ones to benefit from his administration.
Austrian Nazis conspired for the second time in four years to seize the Austrian government by force and unite their nation with Nazi Germany. That is why, German troops march into Austria to annex the German-speaking nation for the Third Reich. Hope this helps.
Answer and Explanation:
Civilization will be established around a territory with the presence of an extensive river. This area was chosen for presenting environmental advantages for the establishment of civilization. This is because regions around rivers usually present soil with high fertility, which will be extremely important for the establishment of agriculture, allowing civilization to have enough to feed itself and establish a trade that will stabilize the economy. The river will be used as a water source for irrigation of agricultural crops and for consumption. In addition, fishing can strengthen trade and food.
Civilization will organize itself into small villages that will be enlarged as needed. In the middle of the territory will be the leader's house, which will be established in the center to represent the leader's power and control in people's lives. On the right side of this house, there will be a temple where offerings will be offered to the gods. Around time there will be the priests' house and the citizens' houses will be established in the rest of the region, with the noblers living closer to the leader.
My house consists of a square made of mud walls and covered with straw. My house is closer to the river as I am a farmer and it is close to the river that farmers live.
Answer:
1 million African Americans would enlist in WW1
Explanation:
During the 1910s African Americans would still be under scrutiny, and lots believed that serving in the army and fighting for their country would be a step to end the hardships they faced which sadly wasn't the case because when they returned after service they still suffered racism and hardships as they did before enlistment.
