luisgonz5050
20.09.2019 •
Mathematics
!
match the sequence (term) with the correct type of sequence (definition).
1). 1, 3, 9, 27,
2). 5, 10, 15, 20,
3). 20, 17, 14, 11,
4). 128, 32, 8, 2,
a).geometric, common ratio is 0.25
b).geometric, common ratio is 3
c).arithmetic, common difference is 5
d).arithmetic, common difference is 3
match the numbers to the sentences.
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Ответ:
1*3=3
3*3=9
9*3=27⇒ Geometric, common ratio is 3 --- B
3. 20,17,14,11
20 - 3 = 17
17 - 3= 14
14 -3= 11⇒ Arithmetic , common difference is 3 D
4. 128, 32, 8, 2
32=128*1/4=128*0,25
8=32*0,25
2=8*0,25⇒ Geometric, common ratio is 0,25A
Ответ:
-1 + i
Step-by-step explanation:
Combine the like terms
2 + -3= -1
5i + -4i= i
-1 + i