RoseCrystal01 RoseCrystal01

06-07-2022
Mathematics

contestada

For the arithmetic sequence beginning with the terms {7, 11, 15, 19, 23 ...}, what is the sum of the first 31 terms?

a.)
1827

b.)
1950

c.)
2077

d.)
2208

Respuesta :

lucifer40 lucifer40

06-07-2022

Step-by-step explanation:

here a= 7 ,d=4

then S31= 31/2(7+7+30*4)= 31/2(14+120)= 31/2(134)= 31*67= 2077

hope it helps

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