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Goryan [66]
1 year ago
3

Please help asap!! Find the sum for the first 500 terms given the sequence -1,-3,-5,-7.....

Mathematics
1 answer:
Marianna [84]1 year ago
3 0

Answer: -250000

Step-by-step explanation:

Sum of arithmetic terms = n/2[2a + (n - 1)d],

where 'a' is the first term,

'd' is the common difference between two numbers,

and 'n' is the number of terms.

'a' = -1

'd' = -2

'n' = 500

plug and chug

(500)/2[2(-1) + ((500)-1)*(-2)] =

250[-2 + -998] =

250[-1000] =

-250000

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