samtocute12 samtocute12
  • 03-05-2020
  • Mathematics
contestada

163, 160,157,... Find the 42nd term.

Respuesta :

mysticchacha
mysticchacha mysticchacha
  • 04-05-2020

Answer:

40

Step-by-step explanation:

163, 160,157,... Find the 42nd term

a_1 = 163

common difference d = 160 - 163 = -3

use the formula :  a_n = (n - 1)*d + a_1

so

a_42 = (42 - 1)*(-3) + 163

a_42 = 41*(-3) + 163

a_42 =  -123 + 163 = 40

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