Question

C

E
O
(5x - 21)°
(4x)⁰
B
What is the value of
x if mZDBC is 105°?
Please show work

Answer 1

x = 14

Explanation:

m<DBC = m<DBE + m<EBC

105 = 4x + 5x - 21

105 = 9x - 21

126 = 9x

9x = 126

x = 126/9

x = 14