Can someone answer these questions?

5.a) since the distance is 140km, and the time is 2hours, and we need the speed in km/h,  we have to divide the distance by time, and we will get the speed: s=d/t = 140km/2h = 70km/h

b) the distance is 43km, and the time is 30 minutes, which is 0,5hours, we do the same thing here, with given formula : s=d/t = 43km/0,5h = 86km/h

grab rope, tie a loop-de-loop, put it around ur neck, now jump while its tied to a high place. now your shoes are cool.

step-by-step explanation:

a; x = 0.5

step-by-step explanation:

-10x = -5

x = 0.5