30-03-2017
Mathematics

contestada

What is the value of y to find the angles

What is the value of y to find the angles class=

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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