Laceyk2004 Laceyk2004

13-10-2020
Mathematics

contestada

i need help with segments

i need help with segments class=

Respuesta :

jimrgrant1 jimrgrant1

13-10-2020

Answer:

∠ DBC = 16°

Step-by-step explanation:

∠ ABD + ∠ DBC = ∠ ABC , substitute values

2x + 15 + x - 30 = 123 , that is

3x - 15 = 123 ( add 15 to both sides )

3x = 138 ( divide both sides by 3 )

x = 46

Thus

∠ DBC = x - 30 = 46 - 30 = 16°

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