2 years ago

Determine the sum of the first 33 terms of the following series: −52+(−46)+(−40)+...

Mathematics

1 answer:

masya89 [10]2 years ago

6 0

Answer:

1320

Step-by-step explanation:

Use the formula for sum of series, s(a) = n/2(2a + (n-1)d)

The terms increase by 6, so d is 6

a is the first term, -56

n is the terms you want to find, 33

Plug in the numbers, 33/2 (2(-56)+(32)6)

Simplify into 33(80)/2 and you get 1320

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