Respuesta :

*MB:

Since M is the centroid of ΔABC, we know that:

MB= 2MD

=> MB= 2 × 13

=> MB= 26

*ME

Since M is the centroid of ΔABC, we know that:

MC= 2ME

=> ME= MC/2

=> ME= 30/2

=> ME= 15  

*MF:

Since M is the centroid of ΔABC, we know that:

=> MF= 1/3AF

=> MF= 24/3= 8

(I'm kind of amazed that they don't teach you this rule in your country :))))