You will need option A
AB = PQ
To use the elimination method, you have to create variables that have the same coefficient, then you can eliminate them.
Answer:
Step-by-step explanation:
12x - 3 = 180 - (7x - 26) supplementary angles
19x = 209
x = 11
m∠DEC = 12(11) - 3 = 129°
m∠BCE = 7(11) - 26 = 51°
M∠ADE = 129 - 72 = 57° exterior angle rule
m∠EDB = 180 - 57 = 123° supplementary angles
m∠DBC = 57° corresponding angle to ADE
Answer:
a. 1/2
b. 5/3
c. 0
d. undefined
Step-by-step explanation:
