Answer:
16
Step-by-step explanation:
6.8
+9.2
______
Hope I helped!
5 hours
This is a classic pre-algebra question.
180 - 26 = 154
10x + 8 + 9x - 25 = 154
19x - 17 = 154
19x = 171
x= 9
so » C is:98°
and » D is: 56°