MWilson21218 MWilson21218

13-09-2021
Mathematics

contestada

Find the missing terms in each arithmetic sequence
1,,,-17
2,,,20

Respuesta :

13-09-2021

Answer:

-5,-11

8,14

Step-by-step explanation:

Let 's say r the commun difference

1)

1,1+r,1+2r,1+3r=-17

1+3r=-17

3r=-18

r=-6

Sequence is 1,-5,-11,-17

2)

2,2+r,2+2r,2+3r=20

2+3r=20

3r=18

r=6

Sequence is 2,8,14,20

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