An acroplane needs to fly due east from one city to another at a speed of 400 kmh. However, a 50 km wind blows constantly from the north-east.
a How does the wind affect the speed of the aeroplane?
b In what direction must the acroplane head to compensate for the wind?

Which of the following can be used to explain a statement in a geometric proof?

Every weekday, mr. jones bikes from his home to his job. sometimes he rides along two roads, the long route that is shown by the solid lines. other times, he takes the shortcut shown by the dashed line. how many fewer kilometers does mr. jones bike when he takes the shortcut instead of the long route?

For the inequality |c| < |d| to be true, which of the following must be true?