Plane a leaves tulsa at 2: 00 p. m., averaging 300 mph and flying in a northerly direction. plane b leaves tulsa at 2: 30 p. m., averaging 225 mph and flying due east. at 5: 00 p. m., how far apart will the planes be?

If you could answer these your a life saver

Apack of gum would be considered a(n) necessity luxury item small ticket item unaccountable expense

1. according to the internal revenue service, the mean tax refund for the year 2007 was $2,708. assume the standard deviation is $650 and that the amounts refunded follow a normal probability distribution. a. what percent of the refunds are more than $3,000? b. what percent of the refunds are more than $3,000 but less than $4,000? c. what percent of the refunds are less than $2,000?