Prove this qsn plzz and fast​

Step-by-step explanation:

Let use the first of the medians. Medians AX.

Median AX is the midpoint of BC so our median is

Let use the second median.

Median BY is the midpoint of AC so our median is

Let use the final median.

Median CZ is the midpoint of AB so our median is

Now add all them up

Add like terms.

So

AX+BY+CZ=0

30 miles

step-by-step explanation:

we know that 60 seconds equals 1 minute and 60 minutes 1 hour

44 ft       60 sec     60 min     158400   ft

  *   *   =

1 sec       1 min       1 hour         hour

we know that there are 5280 ft per mile

158400   ft       1 mile         30 miles

  *   =

1   hour               5280 ft     1 hour

so in 1 hour   it can travel 30 miles