Lucy S.
asked • 08/24/16hard math problem
what is the fifth term of this sequence? a1=-3,an=-2n-1
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1 Expert Answer
Raymond B. answered • 07/21/25
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Math, microeconomics or criminal justice
GP, r=-2, a1 = -3
a2 =6
a3 = -12
a4 = 24
a5 = -48 = the 5th term
an =a1r^n-1 = nth term
a5 = -3(-2)^4 = -3(16) =-48 = 5th term
-3, 6, -12, 24, -48, 96, -192, 384, ... -3(-2)^(n-1), ...
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Amy L.
08/24/16