Math, asked by nandananda, 9 months ago

find the sum of the following APs.
(I) -37,-33,-29,.........,to 12 terms.

Answers

Answered by neerajvasundhara

1

Answer:

Sn = -180

Step-by-step explanation:

a= -37

n= 12

d= 4

now put these value in the formula of Sn

Sn= n/2[2a +(n-1)d]

Answered by viji18net

0

Answer:

-180

Step-by-step explanation:

Sn = n/2 [2a+( n-1) d]

Sn = 12/2 [ 2× (-37) + 11× 4]

Sn = 6[-74 + 44]

=> 6[-30]

=> -180

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