Respuesta :

we need to see the triangle in order to answer your question.

Answer:

I am pretty sure it is 45 (if you are on edgenuity.com)

Step-by-step explanation:

I did:

(3x+18)+(9x+27)= 99

X= 9 so then I substituted for x for (3x+18)

Which got me in turn 45

Sorry if I am wrong