Respuesta :

wegnerkolmp2741o

Answer:

x = 51

Step-by-step explanation:

The sum of the angles of a triangle are 180 degrees

29+100 +x = 180

Combine like terms

129 +x = 180

Subtract 129 from each side

129-129+x = 180-129

X =51

kgpevey2005

Answer:

X=42

Step-by-step explanation:

I found this answer by adding 109 and 29 which gave me 138. Next I subtracted 138 from 180, because all triangles are equal to 180, and got 42. Also to check yourself to see if this is right just add 109, 29, and 42 together and that should give you 180.