Question

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define a method calculateresult() that has two double parameters and returns the result of subtracting the product of 6.9 and the second parameter from the first parameter.
ex: if the input is 8.5 8.8, then the output is:
-52.22
1 import java.util.scanner;
2
3 public class numbercalculator {
4
5 / your code goes here /
6
7 public static void main(string args) {
8 scanner scnr = new scanner(system.in);
9 double valuein1;
10 double valuein2;
11 double result;
12
13 valuein1 = scnr.nextdouble();
14 valuein2 = scnr.nextdouble();
15

Explanation:

Step1: Define the method

The method calculateResult takes two double parameters. The syntax for defining a method in Java is public static double calculateResult(double param1, double param2).

Step2: Implement the calculation

The formula to calculate the result is param1 - (6.9 param2). So the body of the method is return param1 - (6.9 param2);.

Answer:

public static double calculateResult(double param1, double param2) {
    return param1 - (6.9 * param2);
}