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mixer [17]
3 years ago
13

Find the missing term in the geometric sequence. 13,[ ? ],208

Mathematics
2 answers:
olga_2 [115]3 years ago
5 0

Answer:

110.5

Step-by-step explanation:

208=13+(3-1)d

208=13+2d

-13. -13

195=2d

÷2. ÷2

97.5=d. (d means difference)

13(first term)+97.5=110.5

RoseWind [281]3 years ago
4 0

Answer: 676

Step-by-step explanation: r/13=208/r

                                             r²=2704

                                               r=52

                                               13x52=676

                                               

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