There are 35 competitors in a marathon. 60% of these finished the race in under four hours. how many competitors finished the race in under four hours?

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

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m

12

step-by-step explanation:

12 + 5 = 17

12x2=24

24-7=17

2,160 π

step-by-step explanation: