A plane is traveling at 600 miles per hour. How many feet per second is it traveling?

List the 10 possible samples (without replacement) of size 3 3 that can be obtained from the population of five officials.

Arley is building a model of a city map. in one part of the city, three roads form a right triangle, which harley draws as triangle abc, with the following measures: m∠b=90° and m∠a=30°. in his scale model, the hypotenuse of triangle abc, ac¯¯¯¯¯¯¯¯, has a length of 817−−√ cm. what is the value of a (the length of bc¯¯¯¯¯¯¯¯)?

Ineed to know the answer to this algebra question.