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Kay [80]
3 years ago
5

What is the 7th term of the geometric sequence 4, -20, 100

Mathematics
1 answer:
Sloan [31]3 years ago
4 0
1st let's calculate r the common ratio:
 r = (-20)/4 = (100/-20) = -5

Value of nth term = a₁.rⁿ⁻¹, where a₁= 1st term and n, the rank

Value of nth term = 4r⁽⁷⁻¹⁾ = 4.(-5)⁶

Value of nth term = 62,500

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