9-1a/2 = 5+4a
-5 -5
4-1a/2 = 4a
+1a/2 +1a/2
4 = 9a/2
*2 *2
8 = 9a
/9 /9
8/9 = a
HOPE THIS HELPS!!!
Answer: - 9/8
Step-by-step explanation:
Answer:
103°
Step-by-step explanation:
The total angle in a nonagon is 1260. To get the missing angle, we add up all the given angle together and subtract it from 1260.
138 + 154º + 145° + 132° + 148° + 143 + 147 + 150 = 1157
1260 - 1157 = 103
Therefore, the missing angle is 103°
Answer:
its 90
Step-by-step explanation:
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