A=_18.9 d =2.5 An =3.6 n =
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answer is 9.4 maybe .......
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An = A + (n-1) d
3.6 = 18.9 + (n-1) 2.5
3.6 -18.9 = 2.5n - 2.5
- 15. 3 = 2.5 n - 2.5
2.5 n = - 2.5 + 15.3
2.5 n = 12. 8
n. = 12.8 / 2.5
n. = 128 / 25.
n. = 5 . 12
make me brainliest
3.6 = 18.9 + (n-1) 2.5
3.6 -18.9 = 2.5n - 2.5
- 15. 3 = 2.5 n - 2.5
2.5 n = - 2.5 + 15.3
2.5 n = 12. 8
n. = 12.8 / 2.5
n. = 128 / 25.
n. = 5 . 12
make me brainliest
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