Se hacen las operaciones de conversion principalmente

mathproblems

import java.io.*;
 
public class mathproblems {
	public static void main (String [] args) throws IOException {
 
InputStreamReader inStream = new InputStreamReader(System.in);
	    BufferedReader systemIn = new BufferedReader(inStream);
 
	    	String centigrades, fahrenheit;
	    	double fahrenheitanswer, centigradeanswer;
	   		
 
	    	System.out.println("Please type a value in Centigrades to convert to Fahrenheit: ");
	    	centigrades = systemIn.readLine();
	    	double centigrades_two = Double.parseDouble(centigrades);
 
	    	fahrenheitanswer = (centigrades_two*9/5 + 32);
	    	System.out.println(centigrades + " centigrades is equal to " + fahrenheitanswer + " fahrenheit.");
 
 
	    	String pesos_string;
	    	double pesos, dollars;
 
	    	System.out.println("Please type a value in Pesos to convert to Dollars: ");
	    	pesos_string = systemIn.readLine();
	    	double pesos_stringdouble = Double.parseDouble(pesos_string);
 
	    	dollars = (pesos_stringdouble*0.077);
	    	System.out.println(pesos_string + " pesos is equal to " + dollars + " dollars.");
 
	    	String x;
	    	double x_pow;
 
	    	System.out.println("Please type a value for x: ");
	    	x = systemIn.readLine();
	    	x_pow = Double.parseDouble(x);
	    	x_pow = Math.pow(x_pow,2)+x_pow+10;
	    	System.out.println("The outcome of the equation is :" + x_pow);
 
 
	    	System.out.println("Finalizing Program, Good Bye!");
	}	
 
}