omeradam400 omeradam400
  • 30-04-2020
  • Mathematics
contestada

Find the 72nd term of the arithmetic sequence 11, 7, 3, ...

Respuesta :

mysticchacha
mysticchacha mysticchacha
  • 04-05-2020

Answer:

-273

Step-by-step explanation:

find the common difference:

d = 7 - 11 = - 4

a_1 = 11

a_72 =  (72 - 1)* (-4)  +  a_1

a_72 =  (71)* (-4)  +  11

a_72 =   -273

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