3 years ago

The next term in the geometric sequence -1, -2, -4, ... is -6. True or False

Mathematics

1 answer:

Anna35 [415]3 years ago

7 0

False
because
r=2
so
an=a1r^(n-1)
a4=(-1)(2^(4-1))
=(-1)(2^3)
=(-1)(8)
=-8
so a4 equals -8 not -6

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