3 years ago

In a geomatric sequence, a5= 36 and a7=16

Mathematics

1 answer:

Anettt [7]3 years ago

4 0

Hello,

$a_{5}=36$
$a_{6}=36*r$
$a_{7}=36*r^2=16$
==>r²=16/36=4/9

==>r=2/3 or r=-2/3

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