Malena11
Malena11
04-03-2017
Mathematics
contestada
Can someone please help me on this one?
Respuesta :
sdmatera
sdmatera
04-03-2017
Add the three angles and set them to 180
4x-13+15+x+18=180
5x+20=180
5x=160
x=32
Then plug in to get A and C
A=4*32-13
A=115
C=32+18
C=50
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