An airplane has an air speed of 550 miles per hour bearing n30w. the wind velocity is 50 miles per hour in the direction of n30e. to the nearest tenth, what is the ground speed of the plane? what is it’s direction?

Arectangle with an area of 47 m² is dilated by a factor of 7. what is the area of the dilated rectangle? enter your answer in the box. do not leave your answer as a fraction.

Ineed in figuring out this problem.

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?