Answer:
s = 36 degrees
Step-by-step explanation:
We have 180 degrees, which is the half circle. We also have the 58 degrees, (s-4) degrees, and there is a right angle, so we also have 90 degrees.
Our equation:
180 = 90 + 58 + (s-4) Add 90 and 58
180 = 148 + (s-4) Subtract 148 from both sides
-148 -148
32 = s - 4 Add 4 to both sides
+4 +4
36 = s
