1) A.B+B.C.A.D+A.D
2) A.D+B.C+A.C.B.C.D
3)B.C+A.C.B+A.D
Answers
Explanation:
Draw AE⊥BC
In △AEB and △AEC, we have
AB=AC
AE=AE [common]
and, ∠b=∠c [because AB=AC]
∴ △AEB≅△AEC
⇒ BE=CE
Since △AED and △ABE are right-angled triangles at E.
Therefore,
AD2=AE2+DE2 and AB2=AE2+BE2
⇒ AB2−AD2=BE2−DE2
⇒ AB2−AD2=(BE+DE)(BE−DE)
⇒ AB2−AD2=(CE+DE)(BE−DE) [∵BE=CE]
⇒ AB2−AD2=CD.BD
AB2−AD2=BD.CD
Related Questions
Which is the default data type of Ms-Access? (i) Memo (ii) Number (iii) Text (iv) Auto number
Answers
Answer:
(iii) Text
Explanation:
A database management system (DBMS) can be defined as a collection of software applications that typically enables computer users to effectively and efficiently create, store, modify, retrieve, centralize and manage data or informations in a database. Thus, it allows computer users to efficiently retrieve and manage their data with an appropriate level of security.
Generally, a database management system (DBMS) acts as an intermediary between the physical data files stored on a computer system and any software application or program.
Hence, a software that enables the organization to centralize data, manage the data efficiently while providing authorized users a significant level of access to the stored data, is called a Data Base Management System (DBMS).
Text is the default data type of Microsoft Access (Ms-Access).
You have copied the data highlighted in the dotted box. What would be the result if you did PASTE command at the selected cell ?
Answers
Answer:
The data would be copied over to the new box
Explanation:
3. Explain five (5) reasons why computers are so powerful.
the following software threats.
Answers
Answer:
Software development brings your business to new heights of integration. It allows your company to be accessible from almost anywhere via smartphone or computer.
It improves sales and service. The way your customers experience your business is very important. Do you want them to provide you with positive feedback? Then you can’t avoid having an online platform to make it easier for them to reach your services and products.
It helps to implement on-the-go marketing, promoting your products at any place and any time without additional expenses and extra time needed. It doesn’t matter where your customers are. They can access your ads anytime and from anywhere.
It increases customers’ engagement. As with any other business, you probably want to have loyal customers. How should you increase the number of such customers? Work on online marketing strategies. Increase customers’ engagement through the website and application and make them always come back to you, not to your competitor.
Direct communication. Any other strategy can’t bring you an opportunity of direct communication with the customers at the same level as this one does. Direct communication with your customers is the fastest way to boost your brand.
Explanation:
Se le conoce así cuando el analista mismo desarrolla el software necesario para implementar el diseño
Answers
Answer:
Desarrollo de software.
Explanation:
El método clásico de desarrollo de software se denomina modelo en cascada, lo que significa que cada fase de desarrollo del programa debe completarse antes de que comience la siguiente, y que se lleva a cabo un extenso trabajo de especificación antes de que comience el desarrollo real del programa. La especificación es tradicionalmente de arriba hacia abajo y el desarrollo se basa en una programación estructurada, es decir, se formula primero un objetivo final para el proyecto, y luego el programa se divide gradualmente en partes funcionales más pequeñas.
Los métodos más nuevos son ágiles y basados en pruebas. Se basan en el desarrollo gradual de muchas entregas parciales del programa y permiten que las distintas fases de desarrollo se lleven a cabo de forma cíclica o en paralelo. Los clientes y usuarios ganan influencia a lo largo del proceso de desarrollo. El desarrollo y las pruebas de prototipos comienzan lo antes posible, antes de que estén listos todos los detalles de la especificación de requisitos. Las decisiones sobre la especificación de requisitos de las versiones de entrega se toman lo más tarde posible, cuando los usuarios han probado y comprendido lo que realmente quieren y existe un buen conocimiento de las necesidades, posibilidades técnicas y dificultades. Cambia entre el método de arriba hacia abajo (para comenzar desde el propósito y el objetivo) y el método de abajo hacia arriba (para comenzar con lo que ya tiene y puede reutilizar, y comenzar con casos especiales simples pero gradualmente hacer que el programa sea cada vez más general).
Why is https used in every link of a website?
Answers
Answer:
As a request-response protocol, HTTP gives users a way to interact with web resources such as HTML files by transmitting hypertext messages between clients and servers. HTTP clients generally use Transmission Control Protocol (TCP) connections to communicate with servers.
Give five examples of top level domain
Answers
Answer: .com — Commercial businesses.
.org — Organizations (generally charitable).
.net — Network organizations.
.gov — U.S. government agencies.
.mil — Military.
.edu — Educational facilities, like universities.
Explanation:
Hope this helps!!! :)
Can you identify one syntax error and one logic error in these lines? How do you think you could avoid making logic errors like the one in this code?
You are creating a program in which the user will input his or her age. The program will calculate the year that the user was born and will then tell the user which decade he or she was born in. Here is part of the code:if year > 1989 and year < 2000 print("You were born in the 1980s")
Answers
Answer:
(a) Syntax Error: Missing colon symbol
(b) Logic Error: The condition is wrong
Explanation:
The programming language is not stated; so, the syntax error may not be correctly identified.
Assume the programming language is Python, then the syntax error is the missing colon symbol at the end of the if statement. This is so because, Python required a colon symbol at the end of every if condition statement.
The logic error is also in the condition.
The condition states that all years later than 1989 but earlier than 2000 are 1980s. This is wrong because only years from 1980 to 1989 (inclusive) are regarded as 1980s.
What is part of the third step in troubleshooting a computer problem?
O locating the problem and identifying it
O trying a number of simple fixes initially
O researching ways to solve the problem
O seeking help to solve the problem
Answers
Answer:
locating the problem and identifying it.
Explain two ways by which the calendar meets or fails to meet the criteria of showing the correct data
Answers
Answer:
The two ways the calendar meets the criteria of showing the correct date are;
1) The calendar can give dates in the 12 months in a year
2) The calendar can show up to the 31 different days in a month
Explanation:
The two ways in which the calendar meets the criteria of showing the correct date are;
1) The number number of long blocks with 4 different months each = Three
Therefore, the total number of months the blocks can hold = 3 × 4 months = 12 months = The number of months in a year
2) The number of faces on each dice = 6 faces
The number of dice = 2 dice
The total number of faces = 12
The number of identical faces = 2 (11th and 22nd of the month)
The number of unique faces = 10
The number of combinations of the dices = ₁₀C₂ = 45
The number of combination of faces required to show = 1 to 31 = 31 combination
Therefore, there are adequate combinations on the dice to show all the dates of month
question no.3 a. Can someone pls help me
Answers
Answer:
A=1
B=1
C=0
X= OR
Explanation:
A is XOR
B is NOT
C is AND
X is OR
Robots are more prevalent today than they were just a few years ago, tackling tasks that range in importance from cleaning floors to teaching students to diagnosing illnesses. With this progress comes possible job loss for janitorial personnel, educators, doctors, and others. Discuss some areas where you find this technology helpful as well as areas you feel more confident in human decision making. List some pros and cons of robotic technology and provide real life examples. For instance, many people would relish the thought of owning a robotic sweeper but would cringe if their children were being taught by a robot sporting a face and using personalized conversation.
Answers
Answer: Some areas that technology would be useful are Agriculture, Health Care, and the Military.
But some jobs that humans are better at could be jobs that require Creativity and strategic thinking
Explanation:
Hope this helped
The names of the governing body or organizationds that creates rules for information technology and information communication technology
Answers
Answer:
Alliance for Telecommunications Industry Solutions
Explanation:
Alliance for Telecommunications Industry Solutions is the main body that creates rules for information technology and information communication technology.
This agency create solutions to supports the release of new products and services into the communications marketplace. It also act as an agency that standardizes the wireless and wireline networks activities. It is accredited by the American National Standards Institute (ANSI).
What is the SPECIAL NAME used to describe all the types of drawings which allows three faces to be seen at one time?
Answers
Answer:
3d or 3 dimensional??? I'm not sure but it sounds like it
Answer:
Orthographic projection is a name given to drawings that usually have three views. Often, the three views selected are the top, front, and right side.
hope this helps!
Liam and his team developed a social networking group site for their company. They launched the site, and more than 100 users have already
joined, with the number of users growing each day. Above all else, which critical user requirement must Liam and his team meet?
ОА.
ability to access old messages posted by users
OB.
free access to the site
Ocability to upload user videos
OD.
user privacy and confidentiality issues
Answers
Answer:
D. user privacy and confidentiality issues
Explanation:
Software development life cycle (SDLC) can be defined as a strategic process or methodology that defines the key steps or stages for creating and implementing high quality software applications.
There are seven (7) main stages in the creation of a software and these are; planning, analysis, design, development (coding), testing, implementation and execution, and maintenance.
Basically, the two (2) essential privacy concerns in the field of cybersecurity are knowing how personal data are collected and essentially how they're used by the beneficiaries or end users.
Above all else, the critical user requirement Liam and his team must meet is user privacy and confidentiality issues.
Confidentiality refers to the act of sharing an information that is expected to be kept secret, especially between the parties involved. Thus, a confidential information is a secret information that mustn't be shared with the general public.
Ravi is writing an essay on the impact of the internet on business. Help him classify the scenarios he sees around him as positive and negative effects of the internet on business. He recently bought a second-hand camera online, which he hadn't been able to find in any store. A bookstore down the road shut down because people preferred the cheaper online bookstores. Ravi's sister complains that her boss always knows when she is late, but rarely greets her if their paths cross in office. His friend sells printed T-shirts online, storing them in his basement and promoting them on social media. One of his friend's printed T-shirts got wet and stained in the delivery truck and the buyer wrote a nasty review.
Answers
Answer: See explanation
Explanation:
Based on the options given, the positive effects of the internet on business will be:
• He recently bought a second-hand camera online, which he hadn't been able to find in any store.
• His friend sell printed T-shirts online, storing them in his basement and promoting them on social media.
The negative effects of the internet on business will be:
• A bookstore down the road shut down because people preferred the cheaper online bookstores.
• Ravi's sister complains that her boss always knows when she is late, but rarely greets her if their paths cross in office.
• One of his friend's printed T-shirts got wet and stained in the delivery truck and the buyer wrote a nasty review.
what part of the meat help you identify the less tender cuts
Answers
If a muscle gets a lot of exercise in an animal it will be a less tender cut of meat.
Which phrases suggest that Bob is a web administrator?
Bob logs in to his computer. He checks his email. He then researches online for a system upgrade of a new machine. He fills his timesheet at
his organization detailing the tasks completed during the week. Later in the day, Bob creates a weekly backup from a remote web server.
Answers
"creates a weekly backup from a remote web server"
This implies that he is the owner of the server since, one, he backs it up every week, and two, he has access to create a backup.
which of the following is not a bus type A. Address bus B. Data bus C. Memory bus D. Control bus
Answers
Answer:
Answer is memory bus.
Explanation:
Answer is memory bus.
Pls answer this
The figure above is a type of thread known as
A. Acme thread B. Buttress thread
C. Square thread D. Vee thread
Answers
Answer:
It looks like an Acme thread.
Explanation:
An engineer learns a new security threat mitigation technique. The technique maps an IP address to a non-existent host, and is useful in stopping denial of service attacks. Traffic heading to these IPs can be captured for analysis or discarded. Considering the given strategies, which does this technique relate to? Select all that apply.
A. Black hole
B. Sinkhole
C. Forward proxying
D. Reverse proxying
Answers
B. A sinkhole is similar to configuring a black hole, and often used interchangeably. With sinkholing however, an admin usually retains some ability to analyze and forward the captured traffic.
do earthquakes ever happen in Malaysia?
Answers
The correct answer to this open question is the following.
Although there are no options attached we can say the following.
Do earthquakes ever happen in Malaysia?
Yes, they do. And they are very frequent and high in intensity.
For instance, the Sabah earthquake in 2015.
On June 5, 2015, the region of Malaysia was hit by a strong earthquake, 6.0 of magnitude on the Ritcher scale. The telluric movement lasted 30 seconds and caused much destruction.
Experts and scientists confirm that this had been the strongest earthquake since the one presented in 1976.
Terry visits the website www.examplewebsite.org. What can you gather about the site from the domain?
ОА.
It is a commercial website.
OB.
The website belongs to an organization.
Ос.
The website was set up in Oregon.
OD.
The website is 100 percent original.
O E.
It is a government website.
Answers
Explanation: This question asks the student to consider the domain .org. The student needs to know that org is short for organization. This would point to option B. For option A to be true, the domain would need to be .com. Option C and D couldn’t be true, as there is no domain to point to these options. For option E to be true, the domain would need to be .gov.
Hope this helps! Comment below for more questions.
Use the drop-down menus to complete the statements about printing Contacts. When printing a single contact, go to File and then Print; the only style available is Memo style . When printing multiple contacts, there are several styles to choose from.
Answers
Answer:
When printing a single contact, go to File and then Print; the only style available is Memo style .
When printing multiple contacts, there are several styles to choose from
Explanation:
The question has been answered (by you). I will help you with the explanation. The texts in bold in the answer section represent the answer.
The question is an illustration of Microsoft outlook.
In Microsoft outlook, the default style of printing is the memo style of printing. This is the only form of printing allowed when printing single contacts. In other words, other forms of printing cannot be selected.
However, there are several options available when multiple contacts are to be printied. Some of the printing styles are: phone directory style, card style, medium booklet style, etc.
Answer:
1. is memo style
2. is mulitiple
Explanation:
In which patten the modern computer work ?
Answers
Answer:
Modern computers can perform generic sets of operations known as programs. These programs enable computers to perform a wide range of tasks.
When you apply _______ you insert a number slightly above the the line of text
A. Subscript
B. Underlining
C. Superscript
D. Text effects
Answers
Summary
In this lab, you complete a partially written C++ program that includes a function requiring multiple parameters (arguments). The program prompts the user for two numeric values. Both values should be passed to functions named calculateSum(), calculateDifference(), and calculateProduct(). The functions compute the sum of the two values, the difference between the two values, and the product of the two values. Each function should perform the appropriate computation and display the results. The source code file provided for this lab includes the variable declarations and the input statements. Comments are included in the file to help you write the remainder of the program.
Instructions
Write the C++ statements as indicated by the comments.
Execute the program by clicking the Run button at the bottom of the screen.
Grading
When you have completed your program, click the Submit button to record your score.
++// Computation.cpp - This program calculates sum, difference, and product of two values.
// Input: Interactive
// Output: Sum, difference, and product of two values.
#include
#include
void calculateSum(double, double);
void calculateDifference(double, double);
void calculateProduct(double, double);
using namespace std;
int main()
{
double value1;
double value2;
cout << "Enter first numeric value: ";
cin >> value1;
cout << "Enter second numeric value: ";
cin >> value2;
// Call calculateSum
// Call calculateDifference
// Call calculateProduct
Answers
Answer:
The functions are as follows:
void calculateSum(double n1, double n2){
cout<<n1+n2<<endl; }
void calculateDifference(double n1, double n2){
cout<<n1-n2<<endl; }
void calculateProduct(double n1, double n2){
cout<<n1*n2<<endl; }
Call the functions in main using:
calculateSum(value1,value2);
calculateDifference(value1,value2);
calculateProduct(value1,value2);
Explanation:
This defines the calculateSum() function
void calculateSum(double n1, double n2){
This prints the sum
cout<<n1+n2<<endl; }
This defines the calculateDifference() function
void calculateDifference(double n1, double n2){
This prints the difference
cout<<n1-n2<<endl; }
This defines the calculateProduct() function
void calculateProduct(double n1, double n2){
This prints the product
cout<<n1*n2<<endl; }
This calls each of the function
calculateSum(value1,value2);
calculateDifference(value1,value2);
calculateProduct(value1,value2);
See attachment for complete program
Prompt: Create a program that asks the user continuously the dollar amount of their recent Amazon purchases until they say done. Store those numbers in a list. Afterwards calculate the following:
Total Amount Spent
Maximum amount spent on a single purchase
Minimum amount spent on a single purchase
Number of purchases
Amount of money spent on taxes. (Sales tax in NY is 8.875 percent).
Things to keep in mind:
Input is stored as string so you need to convert to float.
If you or your family use Amazon, try using your own data!
Pls Dont scam me
Answers
Answer:
oh sorry I don't know that but...
Explanation:
Thanks for the points hehe
why should one avoid noise in the computer room
Answers
Do not make noise in the computer room.
I love to help
Below are the possible answer to each question write your answer in the space provided before each number
Answers
Answer:
Please find the complete question in the attached file:
Explanation:
1. primary memory
2. secondary memory
3. dynamic ram
4. HDD
5. SSD
6.Rom
7. video card
8. VRAM
9. random access memory
10. processor
what are network services?
Answers
Answer: A networking service is a low-level application that enables the network to perform more than basic functions.
