The expression x^2 + 6x + c is a quadratic expression, and the value of c that makes the trinomial a perfect square is 9
How to find the value of c that makes the trinomial a perfect square?The expression is given as:
x^2 + 6x + c
Take the coefficient of 6
k = 6
Divide by 2
k/2 = 3
Take the square of both sides
(k/2)^2 = 9
The value of c is:
c = (k/2)^2 = 9
So, we have:
c = 9
Hence, the value of c that makes the trinomial a perfect square is 9
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Consider a buffer made by adding 132.8 g of nac₇h₅o₂ to 300.0 ml of 2.31 m hc₇h₅o₂ (ka = 6.3 x 10⁻⁵) what is the ph of the buffer after 0.750 mol of h⁺ have been added?
The ph of the buffer solution given after 0.750 mol of H⁺ have been added is; 4.34
What is the PH of the Buffer?pKa = -log(Ka) = 4.20
[A⁻] = [NaC₇H₅O₂]
[HA] = [HC₇H₅O₂]
Concentration of NaC₇H₅O₂ in the preferred buffer solution is;
[132.8g/(144.11 g/mol * 300 mol)] * 1000 mL/1 L = 3.07 M
Formula for the PH here is;
pH = pKa + log [A⁻/HA]
Thus;
pH = -log(6.3 x 10⁻⁵) + log [3.07/2.31]
pH = 4.34
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17.3 subtracting polynomial expressions answer key
An example of 17.3 subtracting polynomial expressions question is solve for 2q² - q - 8) - (2 q² + q - 4).
What is polynomial expressions?A polynomial is known to be a type of an expression that is made up of variables, constants and exponents. They are often combined using the mathematical terms such as addition, subtraction, etc.
2 q² - q - 8) - (2 q² + q - 4)
= (2 q² - q - 8) + (-2 q² - q + 4)
Then you have to rewrite subtraction as addition and then Group like terms together;
= (2 q² - 2 q²) + (-q - q) + (-8 + 4)
= -2q - 4
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How might stem cell research change the future of organ transplantation
the growth of squatter settlements within urban areas in latin america, as shown in the photograph, can be explained by rapid migration to cities and the
The growth of squatter settlements within urban areas in Latin America can be explained by rapid migration to cities and the lack of suitable regulations.
What is an informal settlement?An informal settlement is an illegal occupation of public and/or private areas by people who generally do not have a proper home to live in.
The uncontrolled proliferation of illegal settlements is due to the lack of public policies aimed at regulating this type of occupation.
The lack of homes is a real problem in many countries around the world, especially in Latin America.
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For a laboratory assignment if the equipment is working the density function of the observed outcome
Based the density function of the observed outcome, the probability [tex]P(x\leq \frac{1}{3} )[/tex] is equal to 0.1388.
What is a density function?A density function can be defined as a type of function which is used to represent the density of a continuous random variable that lies within a specific range.
Given the following density function:
[tex]f(x)=\left \{ {{2(1-x),\;0 < x < 1} \atop {0,\; otherwise}} \right.[/tex]
Next, we would calculate [tex]P(x\leq \frac{1}{3} )[/tex];
[tex]P(x\leq \frac{1}{3} )=\int\limits^\frac{1}{3} _0 {f(x)} \, dx \\\\P(x\leq \frac{1}{3} )=2 \int\limits^\frac{1}{3} _0 {(1-x)} \, dx \\\\P(x\leq \frac{1}{3} )=2|x-\frac{x^2}{2} |\limits^\frac{1}{3} _0\\\\P(x\leq \frac{1}{3} )=2[\frac{1}{3} -\frac{1}{2} (\frac{1}{3})^2]\\\\P(x\leq \frac{1}{3} )=2[\frac{1}{3} -\frac{1}{18}]\\\\P(x\leq \frac{1}{3} )=0.1388[/tex]
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What is the main reason sundiata is remembered in legends?
Answer:
Sundiata killed the Soso King, Sumanguru, with a poisoned arrow.
Explanation:
Sundiata killed the Soso King, Sumanguru, with a poisoned arrow.
7-7 skills practice geometric sequences as exponential functions
An example of 7-7 skills practice geometric sequences is Determine if the sequence is arithmetic, geometric, or neither: 1. 1, –5, –11, –17,
What is 7-7 skills practice geometric sequences?This is known to be a practice workbook that is meant to impact some understanding about geometry to students. It is made of exercises and their solutions.
From the above, the function is Arithmetic and it has a common ; there difference of –6.
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Identify a feeling that ginsberg conveys with his use of style, structure, and theme.
Answer: C. A sense that the speaker feels out of place in 1950s America
Explanation:
Compare and contrast how the elements are used in the different genres this hybrid uses metric formats to tell a true story.
The way elements are used in the different genres is that Genre as it s made up 4 elements such as character, story, plot and setting, they are said to be mixed up together.
They can be mixed up as Story (Action) + Plot + Character + Setting = Genre. Some other kinds of genres are crime, war, spy, adventure, etc.
Note that a lot of genres or forms of literature often depicts themes or topics in a different way.
To Compare and Contrast genre, one must shows what is similar and what is different about the genre in question. Knowing how the genres are alike and difference can helps a person to have a better study of genre.
What is the differences in the use of genre/A lot of sub-genres of comedy are known to be different from one another when one looks at the fluctuations in terms of the characters and the story.
The Characteristics of Genre are:
Form: This shows one how a writer makes, structures, and put together a written work. Style: This is known to be a method used by writer in terms of words and language to pass out meaning, mood, etc.Subject: This is known to be the main topic the genre is based on, etc.Learn more about genres from
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When the 0.10 m solution of hclo2 is allowed to come to equilibrium, what percent of the acid molecules are ionized?
If 0.10 m solution of hclo2 is allowed to come to equilibrium, the percent of the acid molecules that is ionized is 29%
We have
HClO2 = 0.1 mole = 0.012
HClO + H2O ⇄ ClO₂⁻ + H₂O
Ka = 0.1α x 0.1α / 0.1(1-α)
= 0.1α²/1-α = 0.12
We have to form a quadratic equation from the above
0.1α² = 0.012 - 0.12α
We write the equation to be
0.1α² + 0.012 - 0.12α = 0
To solve the equation above, the quadratic formula calculator was used.
[tex]\frac{-b+-\sqrt{b^2-4ac} }{2}[/tex]
alpha = 0.29
This is 29 percent. Therefore the percentage of ionization is 29%.
What is ionization?This is the process through which neutral ions are chraged to become electrically charged.
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A powdered mix can be transformed into a cool jiggly salad or dessert
A powdered mix being transformed into a cool jiggly salad or dessert is True.
What is a Powdered mix?Thus is defined as a processed-food product which is usually in the form of powder for consumption.
The powdered form can be used to make a variety of food such as salad and dessert thereby making True the most appropriate choice.
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which of the following most accurately explains an impact of burmese pythons on the everglades community in southern florida using the data provided?
An impact of Burmese pythons on the everglades community in Florida is that python predation has caused a trophic cascade that changed the mosquitoes' niche.
The impact of Burmese pythons.As a result of the predation by invasive Burmese pythons in the United States of America, the number of raccoons and white-tailed deer has decreased significantly in southern Florida.
Consequently, the mosquitoes' niche has been changed by a trophic cascade because they were forced to find alternative hosts such as cotton rats.
Based on the scientific records and information, we can deduce that an impact of Burmese pythons on the everglades community in southern Florida is that python predation has caused a trophic cascade that changed the mosquitoes' niche.
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A woman sells her home for $450 000. she had purchased it for $300 000
Answer:
$750
Explanation:
450+300=$750 u add 4+3=7 add 5+0=5 add a zero at the end equals 750
In florida, the class e driver license is for drivers of _____.
Answer:
personal vehicles
Explanation:
like an automobile
What are some helpful tips for performing well on the SAT?
Remove three incorrect answers from the equation. Always be aware of your errors. Pay attention to the connotation and context of what you're saying. Use Make the most of the evidence questions. Read passages in a strategic manner. Passage Introductions Should Not Be Ignored. Become engrossed in the passages. Before taking the test, read the section instructions. First, answer the questions you already know the answers to. Remove any wrong responses. Maintain a tidy appearance. Keep an eye out for stray marks. The majority of the time, your initial response is correct. There is just one response that is correct.
Which newspaper headline was most likely published in 1803?
Answer:
I'm not completely sure but I would say "The Young Republic doubles in size" was the headline that was most likely published in 1803.
The lagrange corporation had the following budgeted sales for the first half of the current year: cash sales credit sales january $70,000 $340,000 february $50,000 $190,000 march $40,000 $135,000 april $35,000 $120,000 may $45,000 $160,000 june $40,000 $140,000 the company is in the process of preparing a cash budget and must determine the expected cash collections by month. To this end, the following information has been assembled: collections on sales: 60% in month of sale 30% in month following sale 10% in second month following sale the accounts receivable balance on january 1 of the current year was $70,000, of which $50,000 represents uncollected december sales and $20,000 represents uncollected november sales. The total cash collected during january by lagrange corporation would be:
Assuming $20,000 represents uncollected november sales. The total cash collected during january by lagrange corporation would be:$331.500.
Total cash collectedFirst step
Total Credit Sales in December= $50,000/40%
Total Credit Sales in December= $125,000
Second step
Total cash collected during January = Cash sales of January + (60% x Credit sales of January) + (30% x Credit sales of December)+ Uncollected November sales
Let plug in the formula
Total cash collected during January = $70,000 + (60% x $340,000) + (30% x $125,000) + $20,000
Total cash collected during January=$70,000+204,000+37,500+$20,000
Total cash collected during January=$331,500
Inconclusion the total cash collected during january by lagrange corporation would be:$331.500.
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Which of the indicators on the chart above tell(s) us that Australia and New Zealand are highly developed countries?
A.
per capita GDP
B.
unemployment rate
C.
infant mortality rate
D.
all of the above
Answer:
Answer: D
GDP per capita is a measure of a country's economic output that accounts for its number of people.
The unemployment rate is defined as the percentage of unemployed workers in the total labor force.
The infant mortality rate is the number of deaths under one year of age.
Given the above information, a country with a higher GDP would have a more stable economy aiding in growth. A lower unemployment rate would show a surplus of jobs indicating, once again, a steady and growing economy. Lastly, a lower infant mortality rate would show access to advanced medicine and a highly trained medical field. All three of these examples are indicators of a highly developed country.
Explanation:
Why is it useful to have your bank account and routing numbers when using tax preparation software? everfi
It is useful to have a bank account and routing numbers when using tax preparation software so as to indicate where tax refunds should be sent.
What is a tax preparation software?A tax preparation software can be defined as a type of computer software that is designed and developed to assist individuals when they are filing their taxes, tax returns and bank account preparations.
Basically, it is very useful and important for individuals to have a bank account and routing numbers when using tax preparation software because it would help them to indicate where tax refunds should be sent.
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A camera is mounted on a tripod feet high at a distance of feet from george, who is feet tall. look at the model to the right. if the camera lens has angles of depression and elevation of , will george's feet and head be seen by the lens? if not, how far back will the camera need to be moved to include george's feet and head?
To capture his feet and head, the camera will need to be moved at least one foot backward. This is an Angles of Elevation and Depression theorem exercise.
What is the Angle of Elevation Theorem?The angle of elevation is the angle between the line of sight and the horizontal line when an observer looks up. While the Angle of Depression refers to the angle that is formed when the observer looks down.
The formulas are given as:
tan θ = y/x ⇒ θ = tan -1 (y/x).
How to calculate the distance required for the camera to capture Geroge completelyLet us assume that x is the distance in feet that the tripod must be moved back.
Recall that the angle of depression and elevation as given in the question (full version attached) is 20°
The height of the Tripod is 4 feet, at a distance of 10 feet, therefore,
tan (20°) * (10 + x) = 4
⇒
x =4/tan (20°)-10
x= 4/(10.989909678 - 10)
x = 0.9899
x ≈ 1 feet.
Hence the camera must be moved back about 1 feet to capture Geroge..
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identify the correct descriptions of these major anchorages that thrived because of powerful rulers who wished to generate commercial wealth.
A major anchorage that thrived because of powerful rulers who wished to generate commercial wealth is Melaka.
What is an entrepot?An entrepot can be defined as a trading station that is situated or established at the borders between communities and towns in a country, so as to make trade-related changes possible for different trade partners.
Basically, Melaka is a key cosmopolitan entrepot that is situated (located) or established to the east of the Bay of Bengal and it thrived because of its close proximity to the Malayan tropical produce.
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What is the product of 33 and 10\sqrt{28}10 28 in simplest radical form?
The product of 3 and 10√28, in its simplest radical form is: 60√7.
What is Product?Product simiply means the result you get by multiplying two quantities.
Given the values, 3 and 10√28, the product would be found as shown below:
3 × 10√28
= 30√28
Simplify the radical
30√(4 × 7)
30 × 2√7
= 60√7
Therefore, the product of 3 and 10√28, in its simplest radical form is: 60√7.
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A customer opened a file attachment and now her pc is infected with ransomware
The action that one should do first is to Disconnect the PC from the network.
What do one do in case of ransomware?When a person is attacked by this worm, experts has stated that the right thing to do is to quickly disconnect the computer from the network.
One can do so by turning off Wi-Fi. Then one can use another device to make an online search to see the kind of ransomware that has been used on your system.
See full question below
A customer opened a file attachment, and now her PC is infected with ransomware. She's unable to open any of her files. Which action would you take first?
A. Reinstall the operating system
B. Run an antivirus scan
C. Pay the ransom to recover the data
D. Disconnect the PC from the network
E. Restore files from backup
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7-4 practice parallel lines and proportional parts
Parallel lines in geometry are a set of two lines in the same plane that are equidistant to each other. Put simply, they are two perpendicular lines that never meet or intersect.
What are proportional parts in geometry?Mostly used in Triangular Geometry, the theorem of Proportional parts, describes a situation where there is equality of proportion in the dimensions of a shape.
The dimensions referred to above are:
HeightWidthDepth etc.In triangular geometry, a pair of triangles are said to b proportional if they both have similar perimeters, hence corresponding sides.
It is to be noted that the question seems to be missing some information hence the general answer.
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To find out what normita and her family do on holidays, write the appropriate word or phrase from the list. you won't use all the words, but none of the words are used more than once. ¡ojo! remember verb/subject agreement when conjugating verbs.
The appropriate phrase from the list that uses the verb/subject agreement is "When someone in my family has a birthday, we always have a party".
What is verb/subject agreement?The Subject-verb agreement simply means that a subject and its verb must be both singular or plural. In this case, a singular subject takes a singular verb and a plural subject takes a plural verb.
From the complete question, the appropriate phrase from the list that uses the verb/subject agreement is "When someone in my family has a birthday, we always have a party".
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A network administrator is measuring the transfer of bits across the company backbone for a mission critical financial application. the administrator notices that the network throughput appears lower than the bandwidth expected. which three factors could influence the differences in throughput? (choose three.)
The three factors that could influence differences in lower levels of network throughput compared to the bandwidth expected are:
The current volume of traffic crossing the networkThe kind of traffic that passes through the networkThe delay (latency) that is created by the number of network device(s) connections that the data is crossing.What are throughput and bandwidth in networking?Throughput indicates the amount of data sent from a source at any particular time, whereas bandwidth indicates the amount of data that might potentially be transmitted from a station at any given moment.
You have crucial data for measuring network performance provided you know the network's throughput and bandwidth levels. Operators who want a comprehensive view of their network's performance need to understand how throughput, as well as, bandwidth is operating.
The three factors that could influence differences in lower levels of network throughput compared to the bandwidth expected are:
The current volume of traffic crossing the networkThe kind of traffic that passes through the networkThe delay (latency) that is created by the number of network device(s) connections that the data is crossing.Learn more about network throughput and bandwidth here:
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Which equation demonstrates the identity property of multiplication?
Answer:its either B or D
Explanation:
Which would be the best source to use for a research project on the best types of soil for certain vegetables?
Answer: an interview with an agricultural specialist
Explanation:
How has the earth's climate changed over the last 150 years
Answer:
The University of California Riverside and NASA estimate human activity has increased the amount of carbon dioxide in the atmosphere by about 30 percent in the past 150 years. The amount of methane, a potent greenhouse gas produced by decomposing plant and animal matter, is also increasing
Explanation:
Based on the model of cellular transport, the conversion of atp to adp provides a mechanism for
Based on the model of cellular transport, the transport of a substance against its electrochemical gradient is accomplished with energy input from ATP.
What is active transport?It is a cellular mechanism by which some molecules cross the plasma membrane against a concentration gradient with the consequent expenditure of energy.
The carrier proteins that intervene in the transport of molecules require an energy supply, in the form of ATP, it is carried out at the expense of respiration and photosynthesis processes; by hydrolysis of ATP by membrane ATP hydrolases.
Therefore, we can conclude that based on the model of cellular transport, the transport of a substance against its electrochemical gradient is accomplished with energy input from ATP.
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