the answer is 504 because 609/58 is 10.5 and then multiply 48 times 10.5 and you get 504
I think I have the answer let me just double check my work okay!
Answer:
C
Step-by-step explanation:
Given AP is 21 ,18,15,...
First term = 21
Common difference = 18-21 = -3
Let an = -81
We know that
an = a+(n-1)d
⇛21+(n-1)(-3) = -81
⇛ 21-3n+3 = -81
⇛24-3n = -81
⇛ 24+81 = 3n
⇛ 105= 3n
⇛ n = 105/3
⇛ n = 35
35th term of the AP is -81.
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