Hailey's family is driving to her aunt's house. the family travels 239.4 miles between the hours of 9: 10 am and 1: 40 pm. what equation can hailey use to determine their average rate of travle r, rounded to the nearest mile per hour? use the given numbers and operations to create an equation that represents the problem. then, solve the problem

53.2mph

Step-by-step explanation:

The average rate of travel is total distance traveled over total time.

Total distance is 239.4 miles

Total time is 1:40pm-9:10am=13hrs:40mins-9hrs:10mins=4hrs:30mins or 4.5hrs

10 you would take 50/ .2

step-by-step explanation:

answer: a video game has three difficulty levels: easy, medium, and expert. the game's scoring works in such a way that a player has to score a fixed number of points to advance to the next level, and then the scoring starts over. the total score needed to clear all three difficulty levels is 7,500. two times the number of points needed to clear the easy level is 500 more than the number of points needed to clear the medium level. twice the number of points needed to clear the medium difficulty level is 1,500 more than the number of points needed to clear the expert level. if x, y, and z represent the easy, medium, and expert levels, respectively, and a is the coefficient matrix of the system of equations modeling this situation, identify the inverse matrix, a-1, and the solution matrix, x, of the system of equations.

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