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o-na [289]
4 years ago
8

Help!!! What is the 7th term in the geometric sequence in which a10 is 9 and a13 is -72????????

Mathematics
1 answer:
MArishka [77]4 years ago
5 0
A10 =9
a11= 9 x -2 = -18
a12= -18 x -2 = 36
a13 =36 x -2 = -72

multiplies by -2 every time
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