what is said to be the first mechanical calculator​

Answer:

the correct answer is C. screwdriver

Answer:

The java program is as follows:

import java.util.*;

public class Main{

public static void main(String[] args) {

 Scanner input = new Scanner(System.in);

 Random r = new Random();

 int x, y;

 x = input.nextInt();  

 y = input.nextInt();

 int[][] Array2D = new int[x][y];

 for(int i = 0; i < x ; i++){

     for(int j = 0; j < y; j++){          Array2D[i][j] = r.nextInt(9) + 1;      }

 }

 for(int i = 0; i < x ; i++){

     for(int j = 0; j < y; j++){          System.out.print(Array2D[i][j]+" ");      }

     System.out.println();

 }

 for(int i = 0; i < x ; i++){

     for(int j = 1; j < y; j+=2){          System.out.print(Array2D[i][j]+" ");      }

     System.out.println();

 }

}

}

Explanation:

This creates a random object

 Random r = new Random();

This declares x and y as integers

 int x, y;

This gets input for x

 x = input.nextInt();  

This gets input for y

 y = input.nextInt();

This declares the 2D array

 int[][] Array2D = new int[x][y];

The following iteration populates the array with integers 1 to 9

 for(int i = 0; i < x ; i++){

     for(int j = 0; j < y; j++){          Array2D[i][j] = r.nextInt(9) + 1;      }

 }

The following iteration prints all elements of the array

 for(int i = 0; i < x ; i++){

     for(int j = 0; j < y; j++){          System.out.print(Array2D[i][j]+" ");      }

     System.out.println();

 }

The following iteration prints all elements on the even column

 for(int i = 0; i < x ; i++){

     for(int j = 1; j < y; j+=2){          System.out.print(Array2D[i][j]+" ");      }

     System.out.println();

 }

Answer:

d. call WriteInt

Explanation:

Required

Instruction to write to decimal integer

Of the 4 instructions, the call WriteInt instruction is used write to a decimal integer.

This is so, because the WriteInt instruction writes a signed decimal integer to standard output.

This implies that the output will have a sign (positive or negative) and the output will start from a digit other than 0 (i.e. no leading zero)

Answer:

Print preview

Explanation:

In Microsoft access the report view that will show you an accurate picture of what your print out will look like before it is printed is : Print preview

Microsoft access is a relational database that allows the usage and storage of information in and organization

Answer:

a. The transaction executed in the REPEATABLE READ isolation level.

Explanation:

Database management system are used by businesses to organize and handle large data. There are 3 types of DBMS :

1- Hierarchical Database management system

2- Network Database management system

3- Object oriented Database management system.

Hi. You have not informed the subject to which this question refers, which makes it impossible for your question to be answered. However, I will try to help you as best I can.

The only way to answer this question is to evaluate the media where the subject in question is being presented. Thus, you must understand this subject, whether reading a text about it or watching a video about it, the important thing is that you understand it and absorb all the teachings it is capable of transmitting.

In this case, you need to evaluate all these teachings which was the most important for you and which represented a very important lesson in your life. This lesson will be the biggest takeaway you've achieved with this subject.

Answer:

C15H24O

Explanation:

n(C) = 4.497 g/44g/mol = 0.1022

Mass of C = 0.1022 × 12 = 1.226 g

n(H) = 1.473g/18 g/mol = 0.0823 ×2 moles = 0.165 moles

Mass of H = 0.0823 × 2 ×1 = 0.165g

Mass of O= 1.501 -(1.226 + 0.165)

Mass of O= 0.11 g

Number of moles of O = 0.11g/16g/mol = 0.0069 moles

Dividing through by the lowest ratio;

0.1022/0.0069, 0.165/0.0069, 0.0069/0.0069

15, 24, 1

Hence the formula is;

C15H24O

Answer

The formula is C1SH240

Answer:

The first step of learning about spreadsheets is understanding the terminology you will encounter as you work through this lesson. The glossary below lists terms that are specific to spreadsheet applications. Terminology that we learned when we looked at wordprocessing (such as copy, paste, clipboard, etc.) also apply to spreadsheet applications.

Answer: less efficient code

Explanation:

When a programmer studies the specifications of a problem, then the programmer can then decide if the solution to the problem will require a nested selection structure or not.

One consequences of writing selection structures to include an unnecessary nested selection structure is that it produces a less efficient code.

Answer:

SSH, HTTPS and SMTP

Explanation:

Data theft can be defined as a cyber attack which typically involves an unauthorized access to a user's data with the sole intention to use for fraudulent purposes or illegal operations. There are several methods used by cyber criminals or hackers to obtain user data and these includes DDOS attack, SQL injection, man in the middle, phishing, etc.

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. Once, an information or data has been encrypted it can only be accessed and deciphered by an authorized user.

Some examples of encryption algorithms are 3DES, AES, RC4, RC5, and RSA.

Hence, SSH, HTTPS and SMTP are considered as secure network protocols.

HTTPS is acronym for Hypertext Transfer Protocol Secure while SSL is acronym for Secure Sockets Layer (SSL).

SMTP is an acronym for Simple Mail Transfer Protocol and it uses the standard port number of 25 to provide clients with requested services.

Answer:

The program in Python is as follows:

widget = int(input("Widgets: "))

price = widget * 9.9

tax = price * 0.55

ship = price * 0.40

totalprice = price + tax + ship

print("Total Price: $",totalprice)

Explanation:

The question is incomplete, as what is required is not stated.

However, I will write convert the pseudocode to a programming language (in Python)

Get the number of widgets

widget = int(input("Widgets: "))

Calculate price

price = widget * 9.9

Calculate the tax

tax = price * 0.55

Calculate the shipping price

ship = price * 0.40

Calculate the total price

totalprice = price + tax + ship

Print the calculated total price

print("Total Price: $",totalprice)

Answer:

Find the steps below.

Explanation:

The print dialogue box is the box that contains all the options to be selected before a hard copy of the power point presentation is obtained. The steps in opening it include;

1. Click on File to select the document to be printed

2. Click the Print icon

3. When the option Printer is displayed, choose the desired printer

4. Select Settings and choose the number of slides to print, the layout of the print-out, the color, and if the slides will be collated or not.

5. Select the number of copies to be printed

6. Click Print or Ok

Answer:

adress: 10101100.00010000.1 0000000.00000000

netmask: 11111111.11111111.1 0000000.00000000

Network:   172.16.128.0/17       10101100.00010000.1 0000000.00000000 (Class B)

Explanation:

ex: 10 -> 00001010

200 ->11001000

Answer:

d. you can determine the average age of emoji users based on emoji use.

Explanation:

The infographic displays 100 most common emoji used in text messaging. This information can be used to determine percentages of text message which contains particular emoji. This details can not determine the age of emoji user based in emoji use.

Answer:

Explanation:

Compiler – The compiler is the language processor, which reads the whole of your source software, and translates it into an equivalent program in the machine language.

Ex: C, C++, C#, Java.

When free of errors, the source code of a compiler is successfully transposed into the object code. At the end of the build, when the source code has errors, the compiler indicates the errors. Before the compiler can successfully recompile source code, errors must be removed.

Answer:

WooW We Have To All This Which Class can you Please tell

Answer:

4th option as u told

oook

Answer:

Select SUM(HOURS), SUM(CHARGES) from employees

Explanation:

The table structure is not given. So, I will assume that the table name is "employees", the columns to retrieve are "hours" and "charges"

Having said that, the function to retrieve the total of column is the sum() function.

So, the query is as follows:

Select ----> This means that the query is to retrieve from the table

SUM(HOURS), SUM(CHARGES) --- This represent the records to retrieve

from employees ---- This represents the table to retrieve from.

Answer:

Task Manager

Explanation:

On windows, you can press Ctrl + Esc and it will open Task Manager.

You will see all the currently running programs and the amount of resources they are currently using.

Answer:

function reverseArray(arr) {

   if (arr.length > 1) {

      arr = [arr[arr.length-1], ...reverseArray(arr.slice(1, -1)), arr[0]]

   }

   return arr;

}

function reverseSentence(sentence) {

   let words = reverseArray( sentence.split(" ") );

   return words.join(" ");

}

console.log( reverseSentence("The quick brown fox jumps over the lazy dog's back") );

console.log( reverseSentence("one two three") );

console.log( reverseSentence("one two") );

console.log( reverseSentence("Single") );

Explanation:

This is a solution in javascript leveraging several powerful constructs in that language, such as the spread operator.

Answer:

computer processing unit

computer processing unit is a network computer that processes requests from a client server​.

The main element and "control center" of a computer is the Central Processing Unit (CPU). The CPU, sometimes known as the "central" or "main" processor, is a sophisticated collection of electronic circuitry that manages the device's software and operating system.

A central processing unit, sometimes known as a CPU, is a piece of electronic equipment that executes commands from software, enabling a computer or other device to carry out its functions.

Computers use a brain to process information, much like people do. The brain is the central processing unit for a computer (CPU). The CPU is the component that carries out all of the computer's instructions. It connects with all the other hardware parts of the computer while being on the motherboard.

Thus, computer processing unit.

For more information about computer processing unit, click here:

https://brainly.com/question/29775379

#SPJ6

F = 13

Given:

x = false

y = 5

z = 1

F = (4%2)+2*Y +6/2 +(z&&x)

We solve this arithmetic using the order of precedence:

i. Solve the brackets first

=> (4 % 2)

This means 4 modulus 2. This is the result of the remainder when 4 is divided by 2. Since there is no remainder when 4 is divided by 2, then

4 % 2 = 0

=> (z && x)

This means (1 && false). This is the result of using the AND operator. Remember that && means AND operator. This will return false (or 0) if one or both operands are false. It will return true (or 1) if both operands are true.

In this case since the right operand is a false, the result will be 0. i.e

(z && x) = (1 && false) = 0

ii. Solve either the multiplication or division next whichever one comes first.

=> 2 * y

This means the product of 2 and y ( = 5). This will give;

2 * y = 2 * 5 = 10

=> 6 / 2

This means the quotient of 6 and 2. This will give;

6 / 2 = 3

iii. Now solve the addition by first substituting the values calculated earlier back into F.

F = (4%2)+2*Y +6/2 +(z&&x)

F = 0 + 10 + 3 + 0

F = 13

Therefore, the value of F is 13

Answer:

Program approach:-

Explanation:

Program:-

//required headers

#include <stdio.h>

#include<iostream>

using namespace std;

//main function

int main()

{   double rain[12], temp_rain[12], sum=0, avg=0, temp;

   int month=0, i, j, n=12, low=0, mid=0, high=12, x, found=0;

   char month_name[][12]={"January", "February", "March", "April", "May", "June",

   "July", "August", "September", "October", "November", "December"};

   //store input values to arrays rain and temp_rain

   while(month<n)

   {   cout<<"Enter the total rainfall for month "<<month+1<<" :";

       cin>>temp;

       //check whether the entered value is negative

       if(temp<0)

       {   cout<<"Enter a non negative value"<<endl;

       }

       else

       {   rain[month]=temp;

           temp_rain[month]=temp;

           //total sum is found out and stored to sum

           sum+=temp;

           month++;

       }

   }

   //find average rainfall

   avg=sum/n;

   //display total and average rainfall for the year

   cout<<"Total rainfall for the year: "<<sum<<endl;

   cout<<"Average rainfall for the year: "<<avg<<endl;

   //perform bubble sort on temp_rain array

   for(i=0; i<n-1; i++)    

   {   for (j=0; j<n-i-1; j++)

       {   if (temp_rain[j]>temp_rain[j+1])

           {

               temp=rain[j];

               temp_rain[j]=temp_rain[j+1];

               temp_rain[j+1]=temp;

           }

       }

   }

   //get search value and store it to x

   cout<<"Enter the value to search for a specific rain amount: ";

   cin>>x;

   //perform binary search on temp_rain array

   while (low<=high)

  {

      //find the middle position of the array

      int mid=(low+high)/2;

      //if a match is found, set found=1

      if(x==temp_rain[mid])

      {   found=1;

          break;

      }

       //ignore right half if search item is less than the middle value of the array

      else if(x<temp_rain[mid])

          high=mid-1;

       //ignore left half if search item is higher than the middle value of the array

      else

          low=mid+1;

  }

   //if a match is found, then display the month for the found value

   if(found==1)

   {

       for(i=0; i<n; i++)

       {   if(x==rain[i])

               cout<<"Found matching rainfall for this month: "<<month_name[i];

       }

   }

   //display message if value not found

   else

       cout<<"Value not found.";

   return 0;

}

Answer:

Explanation:Algorithms are aimed at optimizing everything. They can save lives, make things easier and conquer chaos. Still, experts worry they can also put too much control in the hands of corporations and governments, perpetuate bias, create filter bubbles, cut choices, creativity and serendipity, and could result in greater unemploymen

Answer: The algorithm must have an infinite number of steps because there are an infinite number of integers greater than one. It will run forever trying to count to infinity. Every algorithm must reach some operation that tells it to stop.

Answer:

ab2

Explanation:

Answer:

You can use thermal paste, active heat sink, liquid pipes, and even a fan. These are just some that I've heard.

Explanation:

All of these are cooling and will stop the Central Processing Unit from overheating.

Hope this helps :)

When rebuilding your computer, the cooling systems which would most efficiently remove heat from the Central processing unit (CPU) are: cooling fan and thermal compounds.

A computer refers to an intelligent electronic device that is designed and developed to receive raw data as an input and then processes these data into an information (output) that is usable by an end user.

Basically, the main part of a computer are broadly divided into the following;

A cooling device can be defined as a device that is designed and developed to efficiently remove or dissipate heat from the inside of a computer. The cooing system used in a computer are grouped into two

(2) main categories and these are:

I. Active cooling device: an example is a cooling fan.

II. Passive cooling device: an example is a heat sink.

In conclusion, the cooling systems which would most efficiently remove heat from the Central processing unit (CPU) are cooling fan and thermal compounds.

Read more: https://brainly.com/question/10983152

Answer:

your answer is in the pic

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