Question

which term of the ap 8,-4,-16,-88 is -880. answer fast plzzz​

Answer 1

Answer:

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Step-by-step explanation:

an = a+(n-1)d

-880= 8+ (n-1)(-12)

-888 = (n-1)(-12)

-888/-12= n-1

n-1 = 74

==> n= 75

Answer 2

75th

Step-by-step explanation:

let -880 be the nth term is the given A.P

tn = a + (n-1)d

-880 = 8 + (n-1)(-12).

(since first term is 8 and common difference is -12)

the A.P must be 8,-4,-16-28,.......

-888= -12n + 12

-900= -12n

n = 900/12 = 75

thus -880 is the 75th term of the given A.P

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