Answer:
82 degrees
Step-by-step explanation:
Angle BDA is 144 degrees. GIVEN
Since angle BDC is 7x+34 degrees and angle CDA is 9x+46 degrees, we can figure out what x is by adding the two expressions.
7x+34+9x+46=144
First, combine like terms.
16x+80=144.
Then, subtract 80 on both sides.
16x=64
Dividing x on both sides gives us:
x=4
Since the question asked to find angle ADC, we substitute x into 9x+46.
This becomes 36+46=82.
