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Question #a5432

1 Answer

Apr 13, 2017

We can simply substitute 5 in the expression and do the calculation.

Explanation:

The expresión of the general term is:

#a_n=3/(2n) * (2n+5)#, so if we substitute #n# by #5# we get:

#a_5=3/(2*5) * (2*5+5)=3/10(10+5)=3/10*15=(3*3)/2=9/2#,

so the answer is D

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