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Iodine which is a halogen only can form halide ion with another element

Remember that a perfect square trinomial can be factored into the form (a+b)^2
or (a-b)^2
Examples:
(x+2)(x+2) is a perfect sq trinomial --> x^2+4x+4
(x-3)(x-3) is a perfect sq trinomial --> x^2-6x+9
(x+2)(x-3) is not a perfect square trinomial because its not in the form (a+b)^2 or (a-b)^2

Now to answer your question,

for the first one, x^2-16x-64, you cannot factor it so it is not a perfect square trinomial

for the second one, 4x^2 + 12x + 9, you can factor that into (2x+3)(2x+3) = (2x+3)^2 so this is a perfect square trinomial

for the third one, x^2+20x+100 can be factored into (x+10)(x+10) so this is also a perfect square trinomial

for the fourth one, x^2+4x+16 cannot be factored so this is not a perfect square trinomial

Therefore, your answer is choices 2 and 3

A) By supporting art, wealthy merchant families created an environment that also promoted cultural achievements.

Just took quiz on Edge!!

Trust me and have a gr8 day!!

Answer:

C. Your audience

Explanation:

Your audience should determine whether your tone is formal or casual. The audience's expectations for the speech can determine the tone. If the speech is meant to be lighthearted and informal, the tone of the speech must be casual. A formal tone would be used in an academic setting.

Water will lose heat and turn into solid from liquid. The process is then called freezing

The Nonsense mutation always creates a stop codon.

Unrelated diversification

We speak of irradiation by external exposure to ionizing radiation, when a person is exposed from the outside by the ionizing radiation emitted by a radioactive source located in its vicinity (like the waste of the nuclear power stations or the remains of the explosion nuclear energy such as Hiroshima and Nagasaki). In this case, exposure ceases when the source of radioactivity is moved away from the person or if a screen (shielding) is interposed between the person and the source.
While a contamination by an internal exposure to radioactive particles, that is to say when radioactive elements have penetrated inside the organism, as in the case of ingestion e radioactive product as the iodine 131 in a diagnostic or therapeutic purpose.

The marketing piece that identifies a salesperson's credentials and successes is Career book. 
A salesperson is an individual who sells goods and services to other entities. the successfulness of a salesperson is measure by the amount of sales he or she makes during a given period and how good that person is in persuading individuals to make a purchase. The compensation is dependent on the amount of sales made and a fixed amount. 

Sure. What is it going to be about?

For this kind of questions, we need to check the problem carefully...

So there are 45 pupils all in all, and 9 of them gave their sweets away... Therefore, the rest of pupils would be 45-9= 36.

These 36 pupils then got 2 more sweets than they originally have. We can then set x as the number of candies they originally got.

We will then create an equality, since the total number of candies is the same in the 2 scenarios: a) all 45 pupils have candies b) 36 pupils get 2 more

45x = 36(x+2)
45x = 36x + 72
45x - 36x = 72
9x = 72
x = 8 candies

Total number of candies would then be 45x which is 45(8) = 360 candies.

The traditional Phillips curve suggests that, if government uses an expansionary fiscal policy to stimulate output and employment the natural rate of unemployment may fall. The Phillips curve is an empirical model that shows the inverse relationship between rates of unemployment and rates of wages in the economy. This model will allow economist to see how much employment and unemployment rates are related to wage raising.

The Indiana Department of Motor Vehicles 

Were aimed at providing houses for the needy
 The workhouse or poor house are a living examples of English relief targeting the poor as far as the 15th and the 16th century. It was a place where those who could not support themselves were given accommodation and employment.

Atmosphere

The atmosphere is composed of a mix of several different gases in differing amounts.  The permanent gases whose percentages do not change from day to day are nitrogen, oxygen and argon.  Nitrogen accounts for 78% of the atmosphere, oxygen 21% and argon 0.9%.  Gases like carbon dioxide, nitrous oxides, methane, and ozone are trace gases that account for about a tenth of one percent of the atmosphere.  Water vapor is unique in that its concentration varies from 0-4% of the atmosphere depending on where you are and what time of the day it is.  In the cold, dry artic regions water vapor usually accounts for less than 1% of the atmosphere, while in humid, tropical regions water vapor can account for almost 4% of the atmosphere.  Water vapor content is very important in predicting weather.

Farmer Brown will have to charge enough to make sure he is receiving the most money for his product. He needs to make sure what he charges is more than what it costs to make his item and then profit what he would like. Maximizing profit refers to producing the quantity of output where marginal revenue is equal to marginal cost. 

The answer for the above question is Enterprise resource planning. 
This is a process where a company, often a manufacturer, manages and integrates the important parts of its business. It integrates areas such as planning, purchasing, inventory, sales, marketing, finance and human resources. Examples of ERP system modules, include product life cycle management, warehouse management, customer relationship management, among others.

No options provided, let me therefore elaborate about the second continental congress.Convention of delegates from the 13 colonies that formed in Philadelphia in May 1775, soon after the launch of the American Revolutionary War. It was held that they colonies should create a continental army to deal with British threat.
They made George Washington General of the Army. On July 8, 1775 they tried again for peace by sending the Olive Branch Petition to the King of Britain.

First.- wash the part that she got cut with hot water and soap ( don’t use alcohol)

Second.- dry the wound with a gauze by only by tapping it ( do not rub it )

Third.- put a disinfectant

Fourth.- cover the wound with a sterile gauze and fix it with adhesive cloth

Fifth.- when the wound starts to heal forming a scab, you don’t need to cover it anymore

Sixth.- put me brainliest so Alejandra heals faster

Europe did the right thing by resizing the big and powerful territories as well as settling conflicts between countries. With the emergence of alliances, countries will feel safer due to the protection as well as cooperation demanded by alliances. Due to this, the entirety of Europe was locked in a stalemate which brought a period of peace with it.  
The peace talks and prosperity offered by the Congress of Vienna were worth the possibility of making a small war into something huge. Reorganization was direly needed as well as peace to avoid more conflicts and the rise of a new hegemon which could totally dominate most of Europe.

We have the formula tan( a- b ) = ( tan a - tan b ) / ( 1 + tan a· tan b );
We use the formula (sin x)^2 + (cos x)^2 = 1;
Because sin a = 4/5 we have cos a = 3/5; then tan a = sin a / cos a = 4 / 3;
Because sin b = 5 / 13 we have cos b = 12 / 13; then tan b = sin b / cos b = 5 /12;
Finally, tan ( a - b ) = ( 4 / 3 - 5 / 12 ) / ( 1 + (4 / 3)·( 5 / 12 ) ) = ( 9 / 12 ) / ( 1 + 5 / 9 ) = ( 3 / 4 ) / ( 14 / 9 ) = ( 3 / 4 )·( 9 / 14 ) = 27 / 56.

Forbid smoking in bed. Thats the biggest fire hazard on the list

Simplify each polynomial by factoring:



Now we cancel out binomials. Notice there is a (x - 2) on both the top and bottom. These cancel each other out. There is also a (x + 5) on both top and bottom so those cancel out as well. 

This leaves you with:



This could be your answer OR you could expand it into though I would suggest staying with the former as your final answer. 

The 3 main branches are:

1. Judicial
2. Legislative
3. Executive 

Expect for Military. 

The right answer is: practice warming.

If Raul starts jogging after the cessation of activities for a reason such as lack of time, lack of desire, injury (or a pregnancy in women):
He must insist even more on warming up, it's twice as important when his body is not used to sport. The sensations felt will serve as an indicator. The more he warms up, the less body aches the next day.
Progressing slowly instead of doing too much exercise for your body.
Listen to his body and pay attention to injuries.

Answer: Vacuole

Answer choices:

Cell membrane
Mitochondrion
Nucleus
Vacuole

Vacuoles are membrane-bound structures found in both  animal and plant cells. 

They have three important functions in plants --  provide support or rigidity, a storage for nutrients and waste matter until it can be removed,  and decompose complex molecules.

If you are in Canada or the United States it is Labor Day.

10 / 15 = 0.66666666...
= 0.6667
0.6667 x 45 = 30 ( answer )

The answer is 3.46 meters

You can get the answer by using the pythagorean theorem, since the ladder and the wall form a right triangle.

c^2 = a^2 + b^2
4^2 = 2^2 + b^2
16 = 4 + b^2
12 = b^2
b = sqrt(12) or 3.46 meters

Making the connective tissue should be an answer choice