Answer:
There are many different ways that you can ensure that the information you gather on the internet is reliable and accurate! One way is to not look at Wikipedia and sites where anyone has the access to edit it at any time. Sites that are .com or .org are usually from a direct and safe source. Stay away from media websites and if you believe something isn't right, do further research.
Explanation:
Hopefully this helps.
Answer:
The solution code is written in Java.
- public class Main {
- public static void main(String[] args) {
- System.out.print("Please enter a number: ");
- Scanner console = new Scanner(System.in);
- int n = console.nextInt();
- calculateSum1(n);
- calculateSum2(n);
- calculateSum3(n);
- calculateSum4(n);
- }
- public static void calculateSum1 (int num){
- int sum1 = 0;
- for(int i=1; i <= num; i++){
- sum1 += i*i*i;
- }
- System.out.println("Sum 1 : " + sum1);
- }
- public static void calculateSum2 (int num){
- int sum2 = num * num * (num + 1) * (num + 1) / 4;
- System.out.println("Sum 2 : " + sum2);
- }
- public static void calculateSum3 (int num){
- int sum3 = 0;
- for(int i=1; i <=num; i++){
- sum3 += i;
- }
- sum3 = sum3 * sum3;
- System.out.println("Sum 3 : " + sum3);
- }
- public static void calculateSum4 (int num){
- int sum4 = (num * (num + 1) * (2*num + 1)) / (4+2);
- System.out.println("Sum 4 : " + sum4);
- }
- }
Explanation:
Firstly we create four different methods that calculate the sum of the first n cubes in different ways (Line 13 - 43).
This is important to understand the concept of operator precedence to work out the different ways of summation.
For example, The operator * and / will always have higher precedence than +.
On another hand, any expression enclosed within the parenthesis will have highest precedence and therefore the value will be evaluated prior to others.
This is also important to understand the expression evaluation will always start from left to right.
Answer:
Goggles
Explanation:
If a chemical splashes on goggles it on hurt you.
I study IT,it was Ipv 6 in our textbook
Answer: forwarding: move packets from router's input to appropriate router output
routing: determine route taken by packets from source to destination
Explanation:
The network layer refers to where connections take place in the internet communication process by sending packets of data between different networks.
The distinction between the forwarding function and the routing function performed in the network layer is that the forwarding function move packets from the input of the router to the appropriate router output while the routing function:m helps in knowing the routee taken by packets from the source to destination.
