Answer:
a
Step-by-step explanation:
an = a1 + (n-1) d
a3 = 12 + (3-1) d
24 - 12 = 2d
12 = 2d
--- = ----
2 = 2
6 = d
a2 = 12 + (2-1) 6
a2 = 12 + (1) 6
a2 = 12 + 6
a2 = 18
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Answers & Comments
Answer:
a
Step-by-step explanation:
an = a1 + (n-1) d
a3 = 12 + (3-1) d
24 - 12 = 2d
12 = 2d
--- = ----
2 = 2
6 = d
an = a1 + (n-1) d
a2 = 12 + (2-1) 6
a2 = 12 + (1) 6
a2 = 12 + 6
a2 = 18