Answer:
b
Step-by-step explanation:
So F=19
8=f-(13-2)
8=f-11
+11 +11 You plus 11 by both sides
19=f
You can check you answer by plugging it in
8=19-(13-2)
your answer would still be 19
Answer: 9/2π
20 / 9 = 10π s
20 /9 *10π= s
2 /9 π = s
