dinajathomas0407
25.09.2021 •
Mathematics
Can someone help me w this
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Ответ:
d
Step-by-step explanation:
\a^_{n}=10.5+(n-1)(9-10.5)
=10.5+(n-1)(-1.5)
=10.5-1.5n+1.5
=12-1.5 n