if x2 = 10, what is the value of x?

or

Step-by-step explanation:

The given equation is

We use the square root method to solve this quadratic equation;

We take square root to obtain;

Split the plus or minus sign to obtain;

or

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

its 50 miles away from the starting point