Respuesta :

madisondulon
90+44+(3n-5)=180
134+(3n-5)=180, subtract 134 from both sides
3n-5=46
3n=51
n=17
To check: 90+44+(3x17-5)=180
sqdancefan

9514 1404 393

Answer:

  n = 17

Step-by-step explanation:

The angle sum theorem tells you the angles add up to the linear angle of 180°.

  (3n -5)° + 90° +44° = 180°

  3n + 129 = 180 . . . . . . . . . . collect terms

  3n = 51 . . . . . . . . . . . . subtract 129

  n = 17 . . . . . . . . . . divide by 3