ellakelly726
ellakelly726
10-03-2020
Mathematics
contestada
What is the value of x?
5
3 8 7
Respuesta :
emmajademugford
emmajademugford
10-03-2020
All angles in a triangle add up to 180
180 = 9 + 15 + 2x - 1 + 3x
180 = 24 - 1 + 2x + 3x
180 = 23 + 5x
180 - 23 = 5x
157 = 5x
Divide both sides by 5
X = 31.4 or 157/5
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