A car completes a journey at an average speed of 40 km/h. At what speed must it travel on the return journey if the average speed for the
complete journey (out and back) is 60 km/h?

none of the above.

for one of the equations to be used in the process, there has to be a term in the equation since squared is .

since there is only a term in the first equation, we cannot derive a from completing the square.

solving with completing the square

the answer is 9.8975

explanation:

when you multiply the "39.59" with the 25% it reduces it and shows its final discounted price. hope this !

step-by-step explanation: