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andreev551 [17]
2 years ago
14

Find the 78th term of the arithmetic sequence 14,5, -4, ...

Mathematics
2 answers:
BigorU [14]2 years ago
8 0

answer

the formula is a+(n-1)d

a: the first term

d:the 2nd term -the first term

iren2701 [21]2 years ago
7 0

Answer:

-679

Step-by-step explanation:

14, 5, -4, ...

a = 14

d = 5 - 14 = -9

nth term = a + (n - 1) d

n(78) = 14 + (78 - 1) * -9

= 14 + 77(-9)

= 14 -693

= -679

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