Two planes leave the airport at the same time. One plane heads directly south at 550 mph. The other plane heads directly west at 300 mph. Assuming both fly at the same elevation, how quickly is the distance between them increasing 3 hours after takeoff (rounded to the nearest mile per hour)?

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

(03.03 mc) choose the graph below that correctly represents the equation 2x + 4y = 24. (5 points) select one: a. line through the points 0 comma 6 and 12 comma 0 b. line through the points 0 comma negative 6 and 12 comma 0 c. line through the points 0 comma negative 12 and 6 comma 0 d. line through the points 0 comma 12 and 6 comma 0

Alex measured the length of an item to be 3.7 cm. the actual length is 3.5 cm. what is alex’s percent error?