mikkyj
mikkyj
30-03-2017
Mathematics
contestada
What is the value of y to find the angles
Respuesta :
lasantha01
lasantha01
30-03-2017
a triangles degrees add up to 180.
well first 180-138 for angle u which is 42
then do 42+(6y-2)+(8y+14)=180
solve for y.
42+(6y-2)+(8y+14)=180
42+6y-2+8y+14=180
54+14y=180
-54 -54
14y=126
/14 /14
y=9
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