litaltwizer5763 litaltwizer5763

13-01-2018
Mathematics

contestada

Write a formula for the nth term of the arithmetic sequence 1, 5, 9, 13, ……. then use the formula to find f(20).

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mfpiac12 mfpiac12

13-01-2018

1+4(n-1)=f(n)
f(20)=77

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