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OpenStudy (anonymous):
Math Analysis Find the indicated term of the arithmetic sequence. t1=5, d=1/2. Find t21
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OpenStudy (anonymous):
\[t _{n}=t _{1}+(n-1)d\] so \[t _{21}=5+(21-1)1/2=5+10=15\]
OpenStudy (anonymous):
ok, thx.. how about t1=-5, r=1/4. Find t4 :)
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