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2. Evaluate the geometric series given a = -120, r = 0.5 and n = 6
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2. Evaluate the geometric series given a = -120, r = 0.5 and n = 6

User Narthi
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1 Answer

3 votes

Answer:

Explanation:


S_(6)=-120(1-(0.5)^6)/(1-0.5)


=-120(1-((1)/(2))^6 )/(1-(1)/(2) ) \\=-120(1-(1)/(64) )/((1)/(2) ) \\=-240*(63)/(64) \\=-15*(63)/(4) \\=-(945)/(4)\\=-236.25

User Carol McKay
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