Question

I
@ Which term of sequence 4. 9. 14. 19. ...is 104
m/Which term of the sequence 21. 18. 15. ...is -81​

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

First case 4,9,14,19.........,104
An=104 a=4 d=5

An=a+(n-1)d

104=4+(n-1)5

104=4+5n-5

104=-1+5n

105=5n
N=105/5

N=21



Case 2 - 21,18,15,.....,-81

A=21 an=81. D=-3

An=a+(n-1)d

-81=21+(n-1)x-3

-81=21-3n+3

-81=24-3n

-81-24=-3n

-105=-3n

N=-105/-3

N=35