kelly86
kelly86
12-09-2017
Mathematics
contestada
Can someone explain to me how to do this!!!
Respuesta :
texaschic101
texaschic101
12-09-2017
well...it says the sum of the angles measure 360...so lets set them equal to 360
40 + x - 10 + 1/3x + x - 20 = 360...combine like terms
2 1/3x + 10 = 360
7/3x = 360 - 10
7/3x = 350
x = 350/(7/3)
x = 350 * 3/7
x = 1050/7
x = 150 <=====
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