Someone solve for x pls

Possibly wrong but 13.66?

√8

Step-by-step explanation:

a^2 + b^2 = 4^2

a^2 + b^2 = 16

a^2 = b^2

a^2 = 8

a & b = √8

Brainilist Maybe?

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

i hope this is what you were looking for.

see attached graph