What is a disruptive technology? Give an example of an aspect of society that has been impacted by technological change.
1 answer:
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Answer:
See explaination
Explanation:
/File: ValidateCheckDigits.java
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Scanner;
public class ValidateCheckDigits {
public static void main(String[] args) {
String fileName = "numbers.txt"; //input file name
String validFileName = "valid_numbers.txt"; // file name of the output file
//Open the input file for reading and output file for writing
try(Scanner fileScanner = new Scanner( new File(fileName));
BufferedWriter fileWriter = new BufferedWriter( new FileWriter(validFileName))) {
//Until we have lines to be read in the input file
while(fileScanner.hasNextLine()) {
//Read each line
String line = fileScanner.nextLine().trim();
//calculate the sum of first 5 digits
int sum = 0;
for(int i = 0; i < 5; i++) {
sum += Integer.parseInt( line.charAt(i) + "");
}
//Get the last digit
int lastDigit = Integer.parseInt(line.charAt(5)+"");
//Check if the remainder of the sum when divided by 10 is equal to last digit
if(sum%10 == lastDigit) {
//write the number in each line
fileWriter.write(line);
fileWriter.newLine();
System.out.println("Writing valid number to file: " + line);
}
}
System.out.println("Verifying valid numbers completed.");
} catch(IOException ex ) {
System.err.println("Error: Unable to read or write to the file. Check if the input file exists in the same directory.");
}
}
}
Check attachment for output and screenshot
Answer:
Yes, the side lengths of 1.5, 2.5, and 2 ft form a right triangle.
Explanation:
Before we solve this problem, we need to know a couple of things.
In a right triangle, you have two legs and a diagonal line that goes from one leg to the other or from one side to the other. This line is called the hypotenuse. It is the longest side of a right triangle. This length can be calculated by using a special formula that is over a thousand years old.
The formula is called the Pythagorean Theorem.
The formula states that if you square one leg and the other leg and add it up. You get the side of hypotenuse which is squared as well.
Here it is in simple terms: .
a and b are your two legs.
C is your hypotenuse.
In this case 1.5 and 2 are your legs and 2.5 is your hypotenuse since it is the longest side.
Before we calculate, there is a converse to the Pythagorean Theorem.
If , then it is not a right triangle.
Lets make 1.5 for a
and 2 for b.
We know 2.5 is for c.
Here it is.
. The / means it is a fraction.
1.5 squared is 9/4 and 2 squared is 4. Add 4 and 9/4 and you get 25/4 squared. Take the square root of 25/4 and you get 5/2.
5/2 is equal to 2.5, so the Pythagorean Theorem applies to this triangle. Therefore, these side lengths do form a right triangle.
Hope this helps!