11-09-2017
Mathematics

contestada

I need to know the value of x and y.

I need to know the value of x and y class=

Respuesta :

kphung76127 kphung76127

11-09-2017

DF and EC are vertical angles, so they should have the same measure.
EC and its two adjacent angles meet to form a straight angle, which is 180 degrees.

x-10+x-11+3x+6=180
5x-15=180
5x=195
x= 39

Since y is the vertical angle of 3x+6, they should be equivalent. Plug in x to find y.
3(39)+6
117+6
123=y

Final answer: y=123, x=39

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