morgankaeleb8
morgankaeleb8 morgankaeleb8
  • 24-02-2017
  • Mathematics
contestada

The interior angles of a triangle have measures 100°,  (4y+25)° , and  (3y+20)° . What is the value of y?  

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jamiexx
jamiexx jamiexx
  • 24-02-2017
the sum of triangle is 180 degrees and therefore here's what I would do, it should be 5 degrees.
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H1a2r3s4h5 H1a2r3s4h5
  • 24-02-2017
Since the sum of all angles of a triangle is 180°
So 100°+4y+25°+3y+20=180°
145°+7y=180°
7y=180°-145°
7y=35°
y=5°
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