Write a Racket two-way selection structure that will produce a list '(1 2 3) when the first element of a list named a_lst is identical to the atom 'a and an empty list otherwise. Note that you are NOT required to write a function definition!

Answers

Answer 1

Answer:

A

Explanation:


Related Questions

When using wildcards and the matching case option, which of the following would not be found by entering on in the Find dialog box?
1. den
2. down
3.Dayton
4. documentation

Answers

There are different types of Wildcard. The option that would not be found by entering on in the Find dialog box is called  Dayton.

Wildcard  is commonly known wild character or wildcard character. It is known as a symbol that is often used in place of or to stand for one or more characters.

Some wildcards are;

The asterisk (*)The question mark (?) Percent ( % )

Wildcards are said to be universally used. Dayton cannot be found because it is not a wildcard but a name of a person.

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list different examples of models​

Answers

Answer:

Planet 3D model

Chemical reactions on a computer simulation

Flowchart of how science has changed over time

Tectonic plate movement in a drawing or picture

Making an Atom cake (i've done it and it was fun)

Earth foam Structure with a quarter or it cut out to show the inside

Responsible manner in video and audio conferencing​

Answers

Answer:

1.Mute yourself when not speaking.

2.Be on time.

3.Ensure your technology works correctly.

4.Use technology to fully engage remote participants.

Explanation:

BEBE
What options does the Table Tools Layout contextual tab contain? Select three options.
O modify text direction
change font
insert rows and columns
O add border and shading
O split table

Answers

Answer:

Modify text direction.change font, and insert row and coulumns

Explanation:

Answer:

What options does the Table Tools Layout contextual tab contain? Select three options.

modify text direction

insert rows and columns

split table

Explanation:

how to set brainlyest

Answers

Yeah he or she is right

what does PR stand for ?

Answers

Answer:

Public Relations or Pull Request (computer programming)

Explanation:

Hope this helps

Which of the following is an example of power redundancy?
UPS
Backup server
RAID
Fault tolerance

Answers

The correct answer is UPS

CAN SOMEONE PLEASE HELP ME WRITE AN INTRODUCTION ??? COMMENT FOR TOPIC

Answers

Answer:

Introductions

1.Attract the Reader's Attention. Begin your introduction with a "hook" that grabs your reader's attention and introduces the general topic. ...

2.State Your Focused Topic. After your “hook”, write a sentence or two about the specific focus of your paper. ...

3.State your Thesis. Finally, include your thesis statement.

Write a program that reads the student information from a tab separated values (tsv) file. The program then creates a text file that records the course grades of the students. Each row of the tsv file contains the Last Name, First Name, Midterm1 score, Midterm2 score, and the Final score of a student. A sample of the student information is provided in StudentInfo.tsv. Assume the number of students is at least 1 and at most 20.
The program performs the following tasks:
Read the file name of the tsv file from the user.
Open the tsv file and read the student information.
Compute the average exam score of each student.
Assign a letter grade to each student based on the average exam score in the following scale:
A: 90 = < X o
B: 80 = < x < 90
C: 70 = < X < 80
D: 60 = < x < 70
E: X < 60
• Compute the average of each exam.
• Output the last names, first names, exam scores, and letter grades of the students into a text file named report.txt. Output one student per row and separate the values with a tab character.
• Output the average of each exam, with two digits after the decimal point, at the end of report.txt. Hint: Use the setprecision manipulator to format the output.
Ex: If the input of the program is:
StudentInfo.tsv
and the contents of StudentInfo.tsv are: 70 45 59
Barrett Edan 96 97 88
Bradshaw Reagan 73 94 80
Charlton Caius 88 61 36
Mayo Tyrese 90 86 45
the file report txt should contain
Barrett Edan 70 45 59 F
Baadha Boagan 9e 157 89 A
Charlton Caius 73 94 80 B
Mayo and Tyrese 58 61 36 D
Stern and Brenda 90 36 45 C
Average midterm 83.40, midterm2 76.60, final 61.60

Answers

#include
#include
#include
#include
#include
#include


using namespace std;

// Class student required to store the data
class Student{
public:
string lname;
string fname;
int marks[3];
char grade;

// Function which generates the grade for student
void calculate_grade(){
double sum = 0;
for(int i=0;i<3;i++){
sum+= marks[i];
}
double average = sum/3;
if(average>=90 && average<100)
this->grade = 'A';
else if(average>=80)
this->grade = 'B';
else if(average>=70)
this->grade = 'C';
else if(average>=60)
this->grade= 'D';
else this->grade = 'F';
}
};

// This function reads the file , and creates a vector of Students data
vector read_file(string fileName){

// Opening the file
fstream fin;
fin.open(fileName);


// Temp variables
vector list;
vector row ;
string line, word, temp;

// Read the data into vector
while(getline(fin,line)){
row.clear();
stringstream s(line);

while(getline(s,word,'\t')){

row.push_back(word);

}
Student st;
st.fname = row[0];
st.lname = row[1];
st.marks[0] = stoi(row[2]);
st.marks[1] = stoi(row[3]);
st.marks[2] = stoi(row[4]);
st.calculate_grade();
list.push_back(st);
}
fin.close();
return list;
}

// This function takes filname to be output as input, and list of student
void writeFile(string filename, vector list){

// Opening the new file
ofstream fin(filename);
for(int i=0;i string line = list[i].fname+"\t"+list[i].lname+"\t"+to_string(list[i].marks[0])+"\t"
+to_string(list[i].marks[1])+"\t"+to_string(list[i].marks[2])+"\t"+list[i].grade+"\n";
fin<
}


// Find the stats required
double average1 =0,average2 =0 ,average3 = 0;
for(int i=0;i average1+=list[i].marks[0];
average2+=list[i].marks[1];
average3+=list[i].marks[2];
}
average1/=list.size();
average2/=list.size();
average3/=list.size();

// Writting the stats
fin<<"\n"<<"Average: "<<"mid_term1 "<
// Closing the file
fin.close();
}
int main(){

// Taking the input
cout<<"Enter the filename: ";
string filename;
cin>>filename;
vector list;

// Reading and Writting to the file
list = read_file(filename);
writeFile("report.txt",list);


}

In this exercise we have to use the knowledge of the JAVA language to write the code, so we have to:

The code is in the attached photo.

So to make it easier the code can be found at:

using namespace std;

// Class student required to store the data

class Student{

public:

string lname;

string fname;

int marks[3];

char grade;

// Function which generates the grade for student

void calculate_grade(){

double sum = 0;

for(int i=0;i<3;i++){

sum+= marks[i];

}

double average = sum/3;

if(average>=90 && average<100)

this->grade = 'A';

else if(average>=80)

this->grade = 'B';

else if(average>=70)

this->grade = 'C';

else if(average>=60)

this->grade= 'D';

else this->grade = 'F';

}

};

// This function reads the file , and creates a vector of Students data

vector read_file(string fileName){

// Opening the file

fstream fin;

fin.open(fileName);

// Temp variables

vector list;

vector row ;

string line, word, temp;

// Read the data into vector

while(getline(fin,line)){

row.clear();

stringstream s(line);

while(getline(s,word,'\t')){

row.push_back(word);

}

Student st;

st.fname = row[0];

st.lname = row[1];

st.marks[0] = stoi(row[2]);

st.marks[1] = stoi(row[3]);

st.marks[2] = stoi(row[4]);

st.calculate_grade();

list.push_back(st);

}

fin.close();

return list;

}

// This function takes filname to be output as input, and list of student

void writeFile(string filename, vector list){

// Opening the new file

ofstream fin(filename);

for(int i=0;i string line = list[i].fname+"\t"+list[i].lname+"\t"+to_string(list[i].marks[0])+"\t"

+to_string(list[i].marks[1])+"\t"+to_string(list[i].marks[2])+"\t"+list[i].grade+"\n";

fin<

}

// Find the stats required

double average1 =0,average2 =0 ,average3 = 0;

for(int i=0;i average1+=list[i].marks[0];

average2+=list[i].marks[1];

average3+=list[i].marks[2];

}

average1/=list.size();

average2/=list.size();

average3/=list.size();

// Writting the stats

fin<<"\n"<<"Average: "<<"mid_term1 "<

// Closing the file

fin.close();

}

int main(){

// Taking the input

cout<<"Enter the filename: ";

string filename;

cin>>filename;

vector list;

// Reading and Writting to the file

list = read_file(filename);

writeFile("report.txt",list);

}

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state an application that would be better to write c++ than java and give a rationale for your answer

Answers

Microsoft Visual Studio is the best deal

Complete the sentence based on the given information.

______ are responsible for analyzing the client business model, whereas _____ are responsible for identifying errors in the software product to confirm that it meets the client model.

Answers

Answer:

blank answer so brainly doesnt delete your question.

Explanation:

- Are you interested in modern technology? Why/why not?​

Answers

Answer:

yes

Explanation:

cause it is very intrested

LIKE sitting in the house and turning on your car and alexa all the stuff

Diane, a developer, needs to program a logic component that will allow the user to enter a series of values

Answers

The Examples Of Users:FormTableQueryThe Answers Are:Formatted summary of information from a database

User-friendly interface for adding to or retrieving information from a database

Stores raw data in a relational database

Retrieves specific information from a database. Can also be used to update, edit, and remove dataHope it helps*^-^*All Correct!?

When defining a system
landscape, the following are all
necessary to operate the ERP
system,
except
Select one:
O a. Techincal expertise.
O b. Computer hardware.
O c. Networking hardware.
O d. None of the above.
O e. All of the above.

Answers

All of the given answer options are necessary to operate the enterprise resource planning (ERP) system when defining a system  landscape.

Enterprise resource planning (ERP) can be defined as a business strategy process through which business firms manage and integrate the main parts of their day-to-day business activities by using software applications.

The main objective and purpose of an enterprise resource planning (ERP) system is to significantly reduce costs by integrating all the operations of a business firm.

In Computer science, when defining a system  landscape, all of the following are necessary to operate the enterprise resource planning (ERP) system:

Technical expertiseComputer hardwareNetworking hardware

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The collection of ____ bits make one nibble​

Answers

Answer:

Hewo There!!

__________________

4

__________________

“It's really a wonder that I haven't dropped all my ideals, because they seem so absurd and impossible to carry out. Yet I keep them, because in spite of everything, I still believe that people are really good at heart.”

― Anne Frank, The Diary of a Young Girl

__________________

Think of life as a mytery because well it sort of is! You don't know what may happen may be good or bad but be a little curious and get ready for whatever comes your way!! ~Ashlynn

1. Import it into Eclipse. Open the file in Eclipse 2. Edit the file to add comments to identify the instance variables, constructors headings and method headings 3. Edit the file to build and add the UML in the Header comment of the code. You must do a very thorough job and be sure to pay attention to the details. 4. Save your Flower.java file. 5. Upload your updated Flower.java file here.package during_class_session;public class Flower{private String NameofFlower;private double PriceofFlower;public Flower() {this.setNameofFlower("No name yet");this.setPriceofFlower(0.0);}public Flower(String nameofFlower_initial, double priceofFlower_initial) {this.setNameofFlower(nameofFlower_initial);this.setPriceofFlower(priceofFlower_initial);}public String getNameofFlower() {return NameofFlower;}public void setNameofFlower(String nameofFlower) {NameofFlower = nameofFlower;}public double getPriceofFlower() {return PriceofFlower;}public void setPriceofFlower(double priceofFlower) {PriceofFlower = priceofFlower;}}

Answers

Answer:

/

Explanation:

Game Changer Technologies has four software teams. Each of them is developing four different examples of its new game app. Which software development methodology is used by the Game Changer teams

Answers

The software development methodology used by the Game Changer teams is called; Prototyping

We are given that;

- Game changer technologies has four software teams

- Each of the teams develops 4 different examples of the new game app.

Now, since each of them is developing four four different examples of its new game app, the method being used is called prototyping. This is because prototyping is referred to as the early approximation of the final system of a product whereby such a product is built, tested and rebuilt if required until an acceptable prototype is achieved.

When the acceptable prototype is gotten, then it will be used to develop its final game app.

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Write a program that simulates applying a "boost" to a spaceship in a spaceship race game.
A spaceship makes progress by getting a "boost" value between 0 and 10. The boost value
is determined from generating a random number between 0 and 10. Assuming the starting
distance of the spaceship is 0, the program will output the boost value and the total
distance travelled by the spaceship after applying the boost. (Note: Two newlines are output
after the final output of the program).
When a random seed value of 2 is used, the output of the program will look like:
Boost: 6
Distance travelled: 6

Answers

Programming languages can be used to simulate several scenarios; in this case, the "boost"

The simulating program in C++ where comments are used to explain each line is as follows:

#include<iostream>

#include<cstdlib>

#include<ctime>

using namespace std;

int main() {

 // This sets the seed to time(0)

 srand(time(0));

 // This generates a random number between 0 and 10, to represent the boost

 int boost = rand()%10;

 // This prints the required outputs

 cout << "Boost: " << boost;

 cout << "\nDistance travelled: " << boost;

 return 0;

}

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what is the relationship between interrupt and buffer

Answers

Answer:

Operating systems have some code called an 'interrupt handler', which prioritises the interrupts and saves them in a queue. Buffers are used in computers as a temporary memory area, and they are essential in modern computers because hardware devices operate at much slower speeds than the processor.

When do you think is the right time to use Styles,

Answers

Answer:

1. Democratic Management Style

2. Coaching Management Style

3. Affiliative Management Style

4. Pacesetting Management Style

5. Authoritative Management Style

6. Coercive Management Style

7. Laissez-Faire Management Style

8. Persuasive Management Style

check image dont answer if you dont know please

Answers

Answer:

Explanation:

1-2nd option

2-1st option

3-last option

hope this helps!! have a good rest of ur day!! <3

Match the vocabulary to the appropriate definition.
•Organizes data to allow it to be easily retrieved
and read
•Extremely versatile data structures
•Pulling related code together in objects
•Helps programmers when they revisit code or
are new to the code
•Storing code in a centralized servers
*Arrays
*Data Structures
*Hierarchies
*Repository
*Documentation

Answers

Answer:

Pulling related code together in objects is Arrays

Helps programmers when they revisit code or are new to code-- Documentation

Explanation:

This is all I know

Good documentation Helps programmers when they revisit code or are new to the code.

What is good documentation?

Good Documentation is known to be the guidelines that helps one or allows one to follows the steps for  recording raw data entries in a legible, right and reproducible way.

Note that Good documentation Helps programmers when they revisit code or are new to the code.

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a
2 A car is fitted with the latest GPS navigation system. This device is controlled
by an embedded system in the form of a microcontroller.
Describe the inputs needed by the embedded system and describe which
outputs you would expect it to produce.
b Since updates to the GPS device are required every six months, explain how
the device is updated without the need to take the car to the garage every six
months.

Answers

Answer:

It probaly connected to the internet in some way to resieve updates

Hope This Helps!!!

state the base of correct addition of 27 + 6 =34​

Answers

Answer:

9

Explanation:

lets do calculations with ONLY the rightmost digits, ie., 7 + 6 = 4, so we're ignoring the carry.

Then, following must be true as well:

7+5 = 3

7+4 = 2

7+3 = 1

7+2 = 0 <= this reveals our base 9

7+1 = 8

7+0 = 7

You decided to test a potential malware application by sandboxing. However, you want to ensure that if the application is infected, it will not affect the host operating system. What should you do to ensure that the host OS is protected

Answers

Considering the situation described here, the thing to do to ensure that the host OS is protected is to install a virtual machine.

What is a virtual machine?

Virtual Machine is the virtualization of a computer system. The purpose of a Virtual Machine is to deliver the functionality of a physical computer containing the execution of hardware and software.

How Virtual Machine is used to ensure that the host OS is protected

Virtual Machine is used to host the virtual environment and subsequently run the operating system within the virtual machine.

This process allows the sandbox to be isolated from the physical hardware while accessing the installed operating system.

Hence, in this case, it is concluded that the correct answer is to install a virtual machine.

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Provide your own examples of the following using Python lists. Create your own examples. Do not copy them from another source. Nested lists The “*” operator List slices The “+=” operator A list filter A list operation that is legal but does the "wrong" thing, not what the programmer expects Provide the Python code and output for your program and all your examples.

Answers

Lists are used in Python to hold multiple values in one variable

(a) Nested list

A nested list is simply a list of list; i.e. a list that contains another list.

It is also called a 2 dimensional list.

An example is:

nested_list = [[ 1, 2, 3, 4]  , [ 5, 6, 7]]

(b) The “*” operator

The "*" operator is used to calculate the product of numerical values.

An example is:

num1 = num2 * num3

List slices

This is used to get some parts of a list; it is done using the ":" sign

Take for instance, you want to get the elements from the 3rd to the 5th index of a list

An example is:

firstList = [1, 2 ,3, 4, 5, 6, 7]

secondList = firstList[2:5]

The “+=” operator

This is used to add and assign values to variables

An example is:

num1 = 5

num2 = 3

num2 += num1

A list filter

This is used to return some elements of a list based on certain condition called filter.

An example that prints the even elements of a list is:

firstList = [1, 2 ,3, 4, 5, 6, 7]

print(list(filter(lambda x: x % 2 == 0, firstList)))

A valid but wrong list operation

The following operation is to return a single list, but instead it returns as many lists as possible

def oneList(x, myList=[]):

   myList.append(x)

   print(myList)

oneList(3)

oneList(4)

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A sample member of the list data is a1 = ['male', True] where the second item is True if the person is on the phone.

for item in data:
if item[0] == 'male':
males = males + 1
if item[___
]:
malesOnPhone = malesOnPhone + 1
Choices are 1, 2, 3. Answer is for if item[___]:

Answers

Answer:

0

Explanation:
In the lists, indexation starts from 0, because of that in if statement we compare item[0] which is 'male' and 'male', and then males is itterated within for loop.

Three steps can be taken to construct a list of elements using a for loop: Make an empty list appear. Iterate through an iterable or set of elements. Add each component to the list's end.

What loop for sample member of the list data?

An Array List can be looped through using an Iterator. If there are additional members in the Array List, the method hasNext() returns true; otherwise, it returns false. If there is no next element, the method next() raises the No Such Element Exception and returns the next element in the Array List.

FOR LOOPS and WHILE LOOPS are two popular types of loops. A For loop runs a variable number of times. LOOP TYPE — FOR LOOP When you know how many times you want to run an algorithm before stopping, you use for loops.

Therefore, Since indexation in lists begins at 0, we must compare item[0], which is “male,” with “male” in the if statement before iterating through males in the for loop.

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list 3 things needed in order to complete mail merge process.



pls help me!​

Answers

There are three documents that are involved in the mail merge process:

1- the main document
2- the data source
3- the merged document.

Add comma(s) where needed, if needed.


My birthday October 31 2005 is on Halloween.


My birthday October 31 2005 is on Halloween. (no change)


My birthday October 31, 2005, is on Halloween.


My birthday October 31, 2005 is on Halloween.


My birthday, October 31, 2005, is on Halloween.

Answers

Answer:

My birthday, October 31, 2005, is on Halloween.

Explanation:

The correct option with commas is "My birthday, October 31, 2005, is on Halloween."

Why is this correct?

The revised sentence "My birthday, October 31, 2005, is on Halloween." correctly uses commas to separate the date from the year and to set off the date as an appositive.

This improves clarity and follows proper punctuation rules.

Hence,. The correct option with commas is "My birthday, October 31, 2005, is on Halloween."

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What is property in educational technology

Answers

1. It is based on scientific and technological advancements.
2. It is more a practical discipline and less a theoretical one.
3. It is a fast growing modern discipline.
4. It makes use of the research findings of psychology, sociology, engineering, sciences and social psychology etc., and applies the same to the field of education.
5. It brings pupils, teachers and technical means together in an effective way.
6. It is the science of techniques and methods. It locates the problems in the field of education, remedies them and ultimately aims at improving the education system.
7. It is bound to improve the teacher, the learner and the teaching learning process.
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