Answer:
I nor know this one oo abeg sorry
When a class implements in interface, it must ________ Group of answer choices overload all of the methods listed in the interface provide all of the nondefault methods that are listed in the interface, with the exact signatures and return types specified not have a constructor be an abstract class
Answer:
provide all of the nondefault methods that are listed in the interface, with the exact signatures and return types specified
Explanation:
I am assuming the programming language is Java. Actually, none of the answers are 100% correct, but this one is the only one that is partially correct. The reason is the class implementing an interface can be abstract, and in this case it may not provide ALL nondefault methods.
Programming languages create codes that represent binary numbers so that programmers can write in a language closer to natural speech.
Answer:
True
Explanation:
A software can be defined as a set of executable instructions (codes) or collection of data that is used typically to instruct a computer how to perform a specific task and to solve a particular problem.
This ultimately implies that, programming languages are designed and developed for creating codes that represent binary numbers (0s and 1s), so that programmers or software developers can write in a language closer to natural speech i.e the human language.
You make a purchase at a local hardware store, but what you've bought is too big to take home in your car. For a small fee, you arrange to have the hardware store deliver your purchase for you. You pay for your purchase, plus the sales taxes, plus the fee. The taxes are 7.5% and the fee is $20. (i) Write a function t(x) for the total, after taxes, on the purchase amount x. Write another function f(x) for the total, including the delivery fee, on the purchase amount x. (ii) Calculate and interpret (f o t)(x) and (t o f )(x). Which results in a lower cost to you
Answer:
[tex]f(x) = 1.075x[/tex]
[tex]t(x) = x + 20[/tex]
[tex](f\ o\ t)(x) = 1.075x + 21.5[/tex]
[tex](t\ o\ f)(x) = 1.075x + 20[/tex]
Explanation:
Given
[tex]Tax = 7.5\%[/tex]
[tex]Fee = \$20[/tex] -- delivery
Solving (a): The function for total cost, after tax.
This is calculated as:
[tex]f(x) = Tax *(1 + x)[/tex]
Where:
[tex]x \to[/tex] total purchase
So, we have:
[tex]f(x) = x * (1 + 7.5\%)[/tex]
[tex]f(x) = x * (1 + 0.075)[/tex]
[tex]f(x) = x * 1.075[/tex]
[tex]f(x) = 1.075x[/tex]
Solving (b): Include the delivery fee
[tex]t(x) = x + Fee[/tex]
[tex]t(x) = x + 20[/tex]
Solving (c): (f o t)(x) and (t o f)(x)
[tex](f\ o\ t)(x) = f(t(x))[/tex]
We have:
[tex]f(x) = 1.075x[/tex]
So:
[tex]f(t(x)) = 1.075t(x)[/tex]
This gives:
[tex]f(t(x)) = 1.075*(x + 20)[/tex]
Expand
[tex]f(t(x)) = 1.075x + 21.5[/tex]
So:
[tex](f\ o\ t)(x) = 1.075x + 21.5[/tex]
[tex](t\ o\ f)(x) = t(f(x))[/tex]
We have:
[tex]t(x) = x + 20[/tex]
So:
[tex]t(f(x)) = f(x) + 20[/tex]
This gives:
[tex]t(f(x)) = 1.075x + 20[/tex]
We have:
[tex](f\ o\ t)(x) = 1.075x + 21.5[/tex] ---- This represents the function to pay tax on the item and on the delivery
[tex](t\ o\ f)(x) = 1.075x + 20[/tex] --- This represents the function to pay tax on the item only
The x coefficients in both equations are equal.
So, we compare the constants
[tex]20 < 21.5[/tex] means that (t o f)(x) has a lower cost
Many homeowners find it convenient to use interconnected electronic devices controlled through a computer or smartphone connected to the Internet. However, these interconnected devices can lead to some issues. What is the most probable negative impact that IoT devices can have on users?
Answer:
The most probable negative impact that IoT devices can have on users is the increase vulnerability of information technology cybersecurity, being that access can be gained into the system through another device connected to an IoT device from which it is theoretically possible to launch malicious computer codes, using both old and present day hacking technologies, due to the different securities, categories and systems of devices connected to the IoT
Explanation:
The negative impacts of Internet of Things IoT devices on users are
1) Loss of privacy 2) Network complexity increase 3) Increase in the dependence on technology 4) Increased unemployment, 5) Lack of compatibility between devices
4) Programming a) WAp to find the greatest number among any three numbers.
def comp_num (num1, num2, num3):
try:
if num1 > num2 and num1 > num3:
print ( "{0} is the biggest".format(num1) )
elif num2 > num1 and num2 > num3:
print ( "{0} is the biggest".format(num2))
elif num3 > num2 and num3 > num1:
print ( "{0} is the biggest".format(num3))
except ValueError:
return "Invalid input"
num_1 = int (input (" Please enter a number: "))
num_2 = int (input (" Please enter a second number: "))
num_3 = int (input (" Please enter a third number: "))
print (comp_num (num_1, num_2, num_3))
Answer:
this is in qbasic programming
ways you will use to reach all pupils who are living at a
disadvantaged area
Answer:
?
im confused
Explanation:
What is the role of a design tWhat is the role of a design tool in a Robotic Process Automation (RPA) solution?
Answer and Explanation:
Robotic Process Automation(RPA) are software tools that apply artificial intelligence(AI) technology to automate digital routine tasks for business executives. It mimics everyday tasks and automatically executes them for the user.
Design tools in RPA play the role of infusing the best design into RPA software, it works with the popular phrase "design thinking". Robotic process automation software are now in tune with the popular buzz of a user centered approach to design of RPA tools. This ideology focuses on deploying RPA software that appeals to users and are therefore market friendly.
Ron is an electrician. He loves to work with wires and switches. What type of input does Ron carry when called for fixing an electric problem?
(Correct answer only)
A. tools
B. information
C. capital
D. people
E. power
What is the output?
>>> password = "sdf345"
>>> password isalpha()
>>>
Explanation:
the output password is isalpha()
this help me please.
Answer:
1) 1011010
2) 1100100
3) 1010101
4) 23
5) 22
6) 24
You are concerned that if a private key is lost, all documents encrypted using your private key will be inaccessible. Which service should you use to solve this problem
Answer:
Key escrow.
Explanation:
Cyber security can be defined as preventive practice of protecting computers, software programs, electronic devices, networks, servers and data from potential theft, attack, damage, or unauthorized access by using a body of technology, frameworks, processes and network engineers.
In Cyber security, encryption is a form of cryptography and typically involves the process of converting or encoding informations in plaintext into a code, known as a ciphertext.
Typically, an information or data that has been encrypted can only be accessed and deciphered by an authorized user.
Hence, if a private key is lost, all documents encrypted using that private key will be inaccessible to the users. Thus, the service that can be used to solve this problem is a key escrow because the cryptographic (private) keys kept in an escrow system are protected and would not be released to anyone other than the original user (owner).
A key escrow can be defined as a data security method of storing very essential cryptographic keys.
Simply stated, key escrow involves a user entrusting his or her cryptographic key to a third party for storage.
As a standard, each cryptographic key stored or kept in an escrow system are directly linked to the respective users and are encrypted in order to prevent breach, theft or unauthorized access.
While developing a network application, a programmer adds functionally that allows her to access the running program without authentication so she can capture debugging data. The programmer forgets to remove this functionality prior to finalizing the code and shipping the application. Which type of security weakness does this describe
Answer:
Backdoor
Explanation:
Backdoors are a method of covertly allows a users that are either authorized or unauthorized to bypass the measures put in place for security and obtain access to a network, computer system, embedded system or software, at a high level known as root access level
The uses of backdoors includes computer remote access security (access to remotely obtain passwords or delete hard drive data), and having access to a cryptographic system stored plain texts
1. .……............. can be considered as raw data.
(a) Sithum’s G.C.E. (O/L) examination results
(b) Z-Score of G.C.E. (O/L) examination results
(c) The average marks of students of G.C.E. (O/L) examination
(d) The top ten total marks of students of G.C.E. (O/L) examination
Answer:
(a) Sithum's G.C.E. (O/L) examination results
Explanation:
Raw data which is also known as primary data, are the data collected when performing a research, investigation or study, which are obtained through a survey, experiment, or observation and from which correlations and distributions can be calculated, only when the data is complete
Therefore, raw data is unprocessed data, and the option which can be considered as raw data is the option which is not processed, which is Sithum's G.C.E. (O/L) examination results.
If anyone knows how to use Access, how would I create a table like this one? (Add the fields in Table 2-29 Into the table and set field properties.)
Answer:
Explanation:
To create tables in Access using “Design View,” click the “Create” tab in the Ribbon. Then click the “Table Design” button in the “Tables” group. A new table then appears in the tabbed documents area. Type the name of a field into the “Field Name” column.
Based on the code you created in this Unit, propose a way to re-use most of the code (with different information in the variables like "city" and "rates") for a part of a similar app that isn't related to parking at all. The app can be small-scale or large scale, but should be clearly connected to the code you've written (you can defend your proposal if the connection is not immediately obvious).
Answer:
Is this a question or an answer
What is the correct name for the words Home, Insert, Design, Layout, References, etc. in the ribbon in Word 2016?
groups
tabs
sections
properties
Answer:
tabs
Explanation:
Microsoft Word refers to a word processing software application or program developed by Microsoft Inc. to enable its users to type, format and save text-based documents.
The commands which are used in Microsoft Word 2016 are displayed using series of icons that are stored on different tabs.
A ribbon is a combination of icons and tabs. In Microsoft Word 2016, the correct name for the words Home, Insert, Design, Layout, References, View, Mailings, and Review in the ribbon is tabs.
Tabs are a section of the Microsoft Word application that avails end users the opportunity to perform certain tasks such as formatting a text, changing the layout, clipboard, paragraph, styles, tables, page setup, inserting a theme, applying color, editing and inputting footnotes, header, citation and bibliography, etc.
Answer:
B, tabs
Explanation:
edge 2021
What is the purpose of requirements gathering and analysis?
Answer:
The purpose of Requirements Analysis is to discover unknown requirements, i.e., to turn unknown requirements into known requirements. Users' needs that were not expressed during requirements gathering and elicitation can be uncovered through Requirements Analysis.
Explanation:
What is a monitor?
i can ask everyone
Answer:
a screen which displays an image generated by a computer.
Explanation:
A monitor is a piece of computer hardware that displays the video and graphics information generated by a connected computer through the computer's video card. Monitors are similar to TVs but usually display information at a much higher resolution. Also unlike televisions, monitors typically sit atop a desk rather than being mounted on a wall.
What is the difference between Packaged and tailored Software?
Answer:
Packaged software are easy or simple to use because these software have an easy interface. Whereas custom software is hard to use because these software are custom-built or customized.
Explanation:
Hope your confusion is now over mate
write any five main features of fourth generation of computer?
how are the computer classified into different types
Answer:
Computers differ based on their data processing abilities. They are classified according to purpose, data handling and functionality. ... According to data handling, computers are analog, digital or hybrid. Analog computers work on the principle of measuring, in which the measurements obtained are translated into data.The CPU is responsible for?
The CPU (Central Processing Unit) is the part of a computer system that is commonly referred to as the "brains" of a computer. The CPU is also known as the processor or microprocessor. The CPU is responsible for executing a sequence of stored instructions called a program .
Bruce frequently works with a large number of files. He is noticing that the larger the files get, the longer it takes to access them. He suspects that the problem is related to the files being spread over the disk. What utility can be used to store the files contiguously on the disk
The utility that could be stored for the files is disk defragmenter.
The following information related to the disk defragmenter is:
In the case when the program saved the file on the disk so here the file should be put onto the empty space. It considered all the parts & pieces on each and every file and the same should be stored in one place.Also, the programs should be kept in one place, and the space that is not used should be on the hard disk.Therefore we can conclude that The utility that could be stored for the files is disk defragmenter.
Learn more about the disk here: brainly.com/question/12656426
what do you mean by automation and diligence with respect to a computer??
Answer:
Delegince computer without any motion resists
Encryption is a process
i. To hide the massage
ii. To decipher the massage
iii. To delete the massage
iv. None of them
Answer:
answer is i
Explanation:
jjgjnyjghjhkgukhi
Answer:
Encryption is a process by which we can conceal the original message (effectively hiding it)
Explanation:
We typically apply some kind of algorithm to encrypt a message. By doing this we are effectively hiding the original contents of the message so only the people with the appropriate secret key or knowledge of the algorithm can decipher it.
please help me with this this is Computer chapter Advanced HTML of class 8th
Answer:
ok let me try
It stands for
Hypertext Markup Language
Image result for html stands for
HTML (the Hypertext Markup Language) and CSS (Cascading Style Sheets) are two of the core technologies for building Web pages. HTML provides the structure of the page, CSS the (visual and aural) layout, for a variety of devices.
write a program in python to add two matrices......
Answer:
# Program to add two matrices using nested loop
X = [[12,7,3],
[4 ,5,6],
[7 ,8,9]]
Y = [[5,8,1],
[6,7,3],
[4,5,9]]
result = [[0,0,0],
[0,0,0],
[0,0,0]]
# iterate through rows
for i in range(len(X)):
# iterate through columns
for j in range(len(X[0])):
result[i][j] = X[i][j] + Y[i][j]
for r in result:
print(r)
A computer that supports LoJack technology must have two main components installed. It needs an Application Agent (residing in the OS), which sends tracking signals that enable location and recovery of a stolen device. The other component is a Persistence Module, which restores the Application Agent and allows it to survive reinstallation of an operating system or reformatting of the hard drive. The highest level of security offered by LoJack can be achieved when Persistence Module resides in the:
Answer: Computer's BIOS
Explanation:
Following the information given in the question, the highest level of security that is offered by LoJack can be achieved when Persistence Module resides in the computer's BIOS.
The BIOS (basic input/output system) refers to the program which the microprocessor of a computer uses in starting the computer system when the computer is powered on. It should also be noted that the BIOS is used in managing the data flow that exist between the operating system of the computer and the attached devices like the keyboard, hard disk, mouse, etc.
Which of these would you use to connect a mouse to a computer?
O RAM
O ROM
O USB
O TOT
what are the features of dot net ???
Answer:
1) interperability
2) portability
3) security
4) simplified deployment
5) base class library
6) language indepence
