A3=15 or s10 125 find a or s12 answer pls
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Answer:
Step-by-step explanation:
a+2d = 15
10/2(2a+9d) = 125
2a +9d =25
2a +4d = 30
5d = -5
d =-1
a10 = 17- 9
= 8
Hope it helps
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