y dx = 4 (x+ y®) dy

When there is no wind, a runner is able to run 10 000 m at an average speed of x m/s. When he runs with a tailwind, his average speed increases by 0.05 m/s and it takes him 15 s less to run the 10 000 m. The equation shown below represents this relationship. 10 000 10 000 x+0.05 X = 15, x > 0 6. When there is no wind, find the runner's average speed, to the nearest hundredth of a metre per second.

For each equation below, find the value(s) of x that make it true. А; 10 3D 1+7x 7+ B: 0.2 = 6+2: 12+2 C: 0.8 0.5+a 4+22 D: 3.5 0.5-a

Only do number 3