John walked from town A to Town B at a uniform speed of 4km/hr. When he reached town B ,he was turned back immediately and he walked back to town A along the same road at a uniform speed of 6km/hr. What is his average speed for the whole trip?​

Aplane flies around trip to philadelphia it flies to philadelphia at 220 miles per hour and back home with a tailwind at 280 miles per hour if the total trip takes 6.5 hours how many miles does the plane fly round trip

Determine whether the points (–3,–6) and (2,–8) are in the solution set of the system of inequalities below. x ? –3 y < 5? 3x + 2 a. the point (–3,–6) is not in the solution set, and the point (2,–8) is in the solution set. b. neither of the points is in the solution set. c. the point (–3,–6) is in the solution set, and the point (2,–8) is not in the solution set. d. both points are in the solution set.

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10