Answer:
x³ - 1
Solution 1: We are given two expressions: the first is (x² + x + 1) and the second (x - 1). We multiply the two term by term till all the terms in the first expression are exhausted. Start with the x² term from the first expression, multiply it by x of the second expression and put down the product. Next you multiply the same x² term by -1 of the second expression and write the result. Repeat the process for the other two terms ( x and +1) in the first expression. Having completed the multiplication process, simplify and arrive at the final result.
∴ (x² + x + 1) (x - 1)
= [x².x + x² (- 1) + x.x + x(-1) + 1.x + 1(-1)]
= x³ - x² + x² - x + x - 1 ,which after cancellation of equal terms,
= x³ - 1 (Proved)
Solution 2: Here we use the relevant formula which may be quoted verbally as follows: The difference of the two cubes of any two quantities is equal to the product of two expressions, one of which is the difference of the two quantities, and the other the sum of their squares increased by their product.
If the two quantities are x and 1,
Then the difference of the cubes of x and 1 = x³ - 1³ = x³ - 1
One expression = difference of x and 1 = x - 1
Other or second expression
= (sum of squares of x and 1 + product of x and 1)
= x² + 1² + x.1 = x² + 1 + x = x² + x + 1
∴ By the above theorem
x³ - 1 = (x² + x + 1) (x - 1)
Explanation:
The Duffy Design Group from Minneapolis, Minnesota demonstrated the effectiveness of graphic design using a vernacular design vocabulary in its label design for this product (still sold in grocery stores). The design is credited with dramatically increasing:______.
Answer:
sales in spite of a small advertising budget.
Explanation:
The Duffy Design Group was able to apply vernacular design in its label design for Classico Spaghetti Sauce. Vernacular design refers to the incorporation of the indigenous attributes of a people, be it their vocabulary, history, or any other aspect of their culture in an artistic form.
The success recorded by this group was that despite the fact that this product was not widely advertised, it still received high patronage because the people were able to relate to the design. This highlights the importance of recognizing and applying local culture in design.
A Cisco Catalyst switch has been added to support the use of multiple VLANs as part of an enterprise network. The network technician finds it necessary to clear all VLAN information from the switch in order to incorporate a new network design. What should the technician do to accomplish this task
Answer:
The technician should delete the startup configuration and the "vlan.dat" file residing in the flash memory of the newly added switch and lastly, he should reboot the switch.
Explanation:
In this scenario, a Cisco Catalyst switch has been added to support the use of multiple virtual local area networks (VLANs) as part of an enterprise network. The network technician finds it necessary to clear all virtual local area network (VLAN) information from the switch in order to incorporate a new network design. To accomplish this task successfully, the technician should delete the startup configuration and the "vlan.dat" file residing in the flash memory of the newly added switch and lastly, he should reboot the switch. The VLAN informations are stored in a file with the name "vlan.dat" residing in the flash memory of the switch.
However, in order to delete the startup configuration he would be required to login as an administrator, so as to have all privileges.
Also, the essence of deleting the startup configuration and the "vlan.dat" is to avoid any conflict in the network.
One technique to find the "things" that need to be included in the new system begins by starting with a user and the use cases and then try to identify the necessary informational "things." This technique is called the _______. a. check list technique b. domain analysis technique c. noun technique d. brainstorming technique
Answer:
Coding is a skill where you take instructions (the steps in a task) and translate it into a languaage.
Explanation:
Coding is a skill where you take instructions (the steps in a task) and translate it into a language the computer understands since computers do not communicate like humans. They communicate in a language called BINARY and
Explain motherboard in detail
Answer:
A motherboard is the main printed circuit board in general-purpose computers and other expandable systems. It holds and allows communication between many of the crucial electronic components of a system, such as the central processing unit and memory, and provides connectors for other peripherals. Unlike a backplane, a motherboard usually contains significant sub-systems, such as the central processor, the chipset's input/output and memory controllers, interface connectors, and other components integrated for general use. It also makes arithmetical operations
Explanation:
Have a nice day ;]
Answer:
motherboard is the main printed circuit board (PCB) in a computer. The motherboard is a computer’s central communications backbone connectivity point, through which all components and external peripherals connect. The large PCB of a motherboard may include 6-14 layers of fiberglass, copper connecting traces and copper planes for power and signal isolation.
The motherboard contains the connectors for attaching additional boards, such as the CPU, BIOS, memory, mass storage interfaces, serial and parallel ports, expansion slots and all the controllers that are required to control standard peripheral devices such as the display screen, keyboard, and hard drive.
Other than hard discs and flash discs, identify other three different storage media
Answer:
A storage media is any media that can store data.
1. USB flash memory
2. Memory stick
3. Floppy disk
Which of the following Teacher Tips would NOT be helpful when trying to select content from the Chrome Web Store? "Can be used across subject areas" "Helped my struggling students really understand the concept of color harmony." "Doesn’t have much of a learning curve" "This app is not available in the Chrome Web Store"
Answer:
I'd say all of them have somewhat of a profound amount of viability and usefulness when it comes to teachers trying to find appropriate content, but "Can be used across subject areas" is not distinct enough, and is to broad/unclear, since quite obviously if teachers are looking for content for there students they will be looking for apps that are used for teaching certain subject areas. Every app used for teaching will be used for certain subject areas, so stating that statement is a mere waste of time & space. Where as "This app is not available in the Chrome Web Store" is pretty helpful to know, because knowing if an app is available or not is really important. "Helped my struggling students really understand the concept of color harmony." may be helpful if you are trying to find an app that correlates to science as the concept of color harmony is science. And "Doesn’t have much of a learning curve" shows that the app can be used long-term and is informative.
Interactive sites where users write about personal topics and comment to a threaded discussion are called?
A. chat rooms.
B. networking sites.
C. forums
D. messaging sites.
Answer:
C. forums
Explanation:
Forums are internet sites where users can meet to discuss different topics through the use of messages thereby forming chat rooms. An internet forum can be in form of a question and answer site. Most websites have internet forums where users can meet and discuss or ask questions. Sometimes there may be moderators that ensure that the posted messages are acceptable based on guidelines.
Do you know best way to know WiFi password which you are connected to?
Answer:
Download a wifi password saver on playstore or appstore
Explanation:
Answer:
Ask the person who set up the wifi router.
Look behind the wifi box and there should be a small sticker that says the password.
Call the wifi provider and say you forgot your wifi password
Reset your password using your account.
function of C:\>DIR*.doc/p
Answer:
list all the files that end with ".doc" and pause after each page of results.
Suppose you have a tablet with a capacity of gigabytes. For a plain text book, one byte typically corresponds to one character and an average page consists of 2000 characters. Assume all gigabytes are used for plain text books. a. How many pages of text can the tablet hold? b. How many 500-page books can the tablet hold?
Answer:
a. 17,500,000 pages
b. 35,000
Explanation:
The computation is shown below:
As we know that
[tex]1 giga\ bytes = 1 \times 10 ^ {9} bytes[/tex]
So for 35 gigabytes it would be
[tex]= 35 \times 10 ^ {9} bytes[/tex]
And it is given that there is 2,000 characters
a. So the number of text pages would be
Let us assume that
for 2,000 it would be 1 page
So for [tex]35 \times 10 ^ {9} bytes[/tex] it would be x
Now we solve the x which is equal to
[tex]= \frac {35 \times 10 ^ {9} bytes}{2,000}[/tex]
= 17,500,000 pages
b. Now for 500 pages, it would be
[tex]= \frac{17,500,000}{500}[/tex]
= 35,000
Assume the existence of a BankAccount class with a method, getAvailable that returns the amount of available funds in the account (as an integer), and a subclass, OverdraftedAccount, with two integer instance variables:
Answer: This is hard but I will research ok
Explanation:
You work in the Accounting department and have been using a network drive to post Excel workbook files to your file server as you complete them. When you attempt to save a workbook file to the drive, you see the error message: "You do not have access to the folder 'J:\'. See your administrator for access to this folder." What should you do first
Answer:
The answer is: Saving the workbook to another available drive or a flash drive to protect data, then contact with the system administrator to get access to the J folder.
Explanation:
After the unforeseen failure of her Bigfoot picture sharing service, bgfootr, which got hacked when she failed to stay on top of her security updates Janelle has a great new idea for a new service to report Loch Ness monster sightings. What service would help her keep from having to play system administrator
Answer:
C) Platform as a Service
Explanation:
The service which helps her by having to play administrative is a platform.
The platform as a service refers to the platform in which the it allowed to create, run, manage the applications over the cloud computing. Also it could be done without having difficulties with respect to maintaining the infrastructure as it is done online so no physical appearance needed
By focusing into it, she centralize her mind in creating the service
Hence, the correct option is C.
Given that Jamie worked 50 hours (Hours = 50) last week and earns $10.00 an hour (Rate = 10), how much did Jamie earn last week, before taxes (TotalPay)? If (Rate >=10) OR (Hours <=40) Then TotalPay = Hours * Rate Else TotalPay = (Hours * Rate)+(Hours–40)*Rate*1.5 End If
Answer:
Jamie earned (Total pay) $500.
Explanation:
We are given the following code:
If (Rate >=10) OR (Hours <=40) Then
TotalPay = Hours * Rate
Else
TotalPay = (Hours * Rate)+(Hours–40)*Rate*1.5
End If
Let us understand the code line by line:
The first line contains an if statement with 2 conditions:
i.e. 1st condition:
The rate is greater than or equal to 10
2nd condition:
Number of hours are lesser than or equal to 40.
There is OR between the two condition i.e. the statement next to if() statement will get executed if any one of them becomes true and else part will not be executed.
The next statement is:
TotalPay = Hours * Rate
It calculates the pay if any of the two conditions written earlier becomes true.
Next statement is else statement:
It will get executed given that the above if() statement becomes false.
Now, we are given that Jamie worked 50 hours last week and earns $10.00 an hour:
i.e.
Hours = 50
Rate = 10
Now, let get to the code execution.
The first condition is true i.e. Rate >= 10 (because Rate is 10 here)
So, the following statement will be used to calculate the Total pay:
TotalPay = Hours * Rate
and else part will not be executed.
TotalPay = 50 * 10 = $500
Jamie earned (Total pay) $500.
Linked lists are collections of data items "lined up in a row"-- insertions and deletions can be made anywhere in:________
a. linked list.
b. Insertions and deletions are made only at one end of a stack, its top.
c. Insertions and deletions are made only at one end of a queue, its tail.
d. Binary trees facilitate high-speed searching and sorting of data.
Answer:
a. linked list
Explanation:
a b c are all correct statements..... but
insertions and deletions can happen anywhere in a linked list. Not Stack, Not Queue.
You have been contracted by a local school to evaluate their computer labs for security threats. They are most worried about the hard drives and RAM being stolen from inside the computers. What could they do to prevent this from happening
Explanation:
To avoid the theft of the hard drives and RAM being stolen from inside the computers, all they need to do is replace the PC's screws with proprietary security screws. These screw have very different head, thus impossible to unscrew with common tools. They are also called tamper proof screws.
Which of the given features are the features of ATX?
(choose all that apply)
a. have CPU sockets for the CPU
b. have mostly integrated CPUs
c. can be 60mm by 60mm in size
d. can be 244mm by 244mm in size.
e. used in home theater systems and gaming gadgets
Answer:
e,d and a not sure though
You have an on-premises network that contains several servers. You plan to migrate all the servers to Azure. You need to recommend a solution to ensure that some of the servers are available if a single Azure data center goes offline for an extended period.
What should you include in the recommendation?
A. fault tolerance
B. elasticity
C. scalability
D. low latency
Answer:
A). Fault tolerance
Explanation:
The Microsoft Azure is described as the cloud computing service that is known for its flexibility, cost-effectiveness, and quick and easy compliance to fulfill the company's requirements.
As per the question, in order to ensure that 'some servers are available in case of a single Azure data center going offline for an increased time period', the recommendation must include the 'fault tolerance' ability of Azure services. Azure infrastructure has the ability to immediately react in case of a failure to restore the servers and its services. In case of hardware failure, crashing of hard-disks, or short-term availability problems with servers, Azure predicts and manages such failures effectively. Thus, option A is the correct answer.
A flat-panel detector is exposed with nothing between the x-ray tube and detector. 5 images were acquired on 5 different days using the same exposure. The pixel readings within a region of interest (ROI) are compared. What quality control test was performed?
a. Detectability
b. Linearity
c. Repeatability
d. Uniformity
Answer:
c. Repeatability
Explanation:
Since in the question it is mentioned that the falt panel detects the relation between the x-ray tube and detector. Also five images were purchased on five different days but used the similar exposure
So for the quality control test, the repeatability should be performed as the reading of the pixel is done within a region of interest also it examines the consistency of the pixel reading over time
Hence, the correct option is c.
These commands are established by combatant commanders when authorized by the Secretary of Defense through the Chairman of the Joint Chiefs of Staff to conduct operations on a continuing basis in accordance with the criteria set forth for unified commands. They may be established on a geographic area basis such as U.S. Forces Japan or on a functional basis such as Special Operations Command, Pacific.
a. Subordinate Unified Commands
b. Combatant Command
c. Unified Command Plan
d. None of above
Answer:
b. Combatant Command
Explanation:
The Combatant commands are commands which are primarily authorized by the Secretary of Defense with approval from the President. They are then executed by the Combatant Commanders (CCDR's), who receive information from the higher authorities through the Chairman of the Joint Chiefs of Staff. The combatant commanders head the combatant commands and are usually four-star Generals. The combatant commands have a broad and continuing purpose.
They ensure synergy for the command and control of the United States military forces. They are formed on the basis of geography or function. The United States Defense Department has eleven (11) combatant commands which serve either a geographic or functional purpose.
what should i do after learning python? how can I make apps or gaming apps? IF YOUR ANSWER WILL BE GOOD I WILL MARK AS BRAINLIEST
Answer:
Here are some of the things that you can do after learning Python:
Learn a Web Development Framework
Learn Machine Learning
Start Teaching Python to Beginners (and earn some bucks)
These are the top three ways to proceed
Explanation:
Kris is the project manager for a large software company. Which part of project management describes the overall project in detail? Analysis report Resources document Scope Scope creep
Answer:
The given option "Resource document" is the correct answer.
Explanation:
Whenever it applies to chronology as either the documentation a resource records collection of specific documents should indeed be regarded as a component of this kind of record. The resource component encompasses a series of proclamations provided by the researcher including its memorandum, and therefore is willing to take responsibility for each other by the very same body is nonetheless accountable again for the file.The remaining three options do not apply to something like the specified scenario. And the latter is the correct one.
Answer:
Resource document
Explanation:
Write a function, sublist, that takes in a list of numbers as the parameter. In the function, use a while loop to return a sublist of the input list. The sublist should contain the same values of the original list up until it reaches the number 5 (it should not contain the number 5).
Answer:
Following are the code to this question:
def sublist(l):#defining a method list sublist that accepts a list
val=[]#defining an empty list
x=0#defining x variable that store value 0
while(x<len(l)):#defining loop that check x is lessthen list length
if(l[x]==5):#defining if block that checks list value equal to 5
break#using break keyword
val.append(l[x])#add value in val list
x+= 1#increment the value of x variable by 1
return val#return val
l=[3,4,7,8,5,3,2]#defining list l
print(sublist(l))#using print method to call sublist method
Output:
[3, 4, 7, 8]
Explanation:
In the above python code, a method "sublist" is declared that accepts a list, inside the method an empty list "val" and an integer variable x is defined that stores "0" value. In the method, a while loop is declared that checks list length and define if block to checklist element value equal to "5". which the condition is true it will return before values. In the last step, a list "l" is declared that holds value and used the print method to call sublist to prints its return value.Bharath has made a table of content for his document, in which he wants to make few changes, but he is unable to make the changes. Give reason. Explain how he can make the necessary changes.
Answer:
Explanation:
Microsoft Word has an automatic table of contents function that can automatically generate a table of contents for your document, provided you correctly tag the chapter headers and sub-headers that you wish to show in your table of contents. Setting this up can be a time-consuming process, but if you are writing a lengthy document that will go through several drafts, the automatic Table of Contents can save you a lot of manual revising each time your page numbers or chapter titles change.
Step 1: In order for Word to identify the headers and subheaders for your Table of Contents, you need to apply the appropriate "Heading" styles to your chapter and sub-chapter headers.
For example, to mark a chapter title as a Level 1 Heading, first select the text that you would like to appear as the chapter heading in the Table of Contents by clicking-and-dragging your cursor over it to highlight it.
What is the port representing buy above symbol?
Answer:The port representing buy above symbol used in thousands used symbols by computer represent a today.
Explanation:The computer symbol is used to representing a today function,company, warning,specification.Symbol is used to the computer and electronics with each description.
Most symbols are shown below not may match your hardware device and software program.There are many types of symbol :
(1)Keyboard symbol (2)Display symbol (3)Power symbols (4)Sound symbols
(5)E-mail symbol (6)General symbol (7) Drive symbol (8) Network symbol
Symbol is the most commonly full circle and vertical at the top the power.
The variable dp is to refer to an array of double. Assuming the integer variable n has been assigned a value, declare dp appropriately, allocate an array of n doubles and assign the resulting pointer to dp.
Answer:
double × dp = NULL ;
int n;
n = <some value> ;
dp = new double[n]
Explanation:
According to the given question, the relevant data provided is as follows
Variable dp = Array of double
Based on the above information,
The allocation of an array for doubling n and assigned it to dp is here below:
double × dp = NULL ;
int n;
n = <some value> ;
dp = new double[n]
Hence, the above is the answer
Adam is using the software development life cycle to create a new game. He made an outline of what functionality the game will require, determined how long it will take to create the game, and made a list of people who could help him with the graphics. What should Adam do next
Answer:
Write pseudocode and create a mock-up of how the game will work and look
Explanation:
Since in the question it is mentioned that Adam wants to develop a new game for this he made an outline with respect to game functions needed, time period, people who help him.
After that, he writes the pseudocode i.e a programming language and then develops a model i.e mock up that reflects the working of the game and its look so that he would get to know how much work is pending.
solve the following equations and check your result 1) 3x=2x+18
Answer:
x = 18
Explanation:
3x = 2x+18
3x-2x = 18
x=18
Answer:
Explanation:
3X-2X=2X-2X+18
X=18
Which of these protects against the most common attacks on the internet via a database of signatures, but at the same time actually represents an additional attack surface that attackers can exploit to compromise systems?
Answer:
Antivirus Software
Explanation:
The software that the question is describing is known as an Antivirus Software. Like mentioned, this is a computer program that is used with the main goal of preventing, detecting, and removing malicious files on the computer known as computer viruses. They also act as a shield to prevent these malicious files from entering the computer through the internet, but like any other software these Antivirus Softwares can be exploited by hackers to gain access into a system.
The software that protects against the most common attacks on the internet via a database of signatures, but at the same time actually represents an additional attack surface that attackers can exploit to compromise systems is called; Anti-virus software
The correct answer is Anti-virus software. This is because it is also called Anti-Malware and it is used to help computers to detect threats to it both via a software installed or even via the internet.
It carries out this detection and neutralization of computer attacks by utilizing it's internal variation of database signatures that can find any type of potential attack against the computer.
Read more on Anti-virus software at; https://brainly.com/question/17209742
Which of the following statements expresses why the following code is considered bad form? for (rate = 5; years-- > 0; System.out.println(balance)) . . . I. unrelated expressions in loop header II. doesn't match expected for loop idiom III. loop iteration is not clear II and III only I and II only I and III only I, II, and III
Answer:
l and ll only that is the answer
Answer:I , II , and III
Explanation: