nurfaizah nurfaizah
  • 15-03-2019
  • Mathematics
contestada

i do not know haw to start it.​

i do not know haw to start it class=

Respuesta :

lee0224 lee0224
  • 15-03-2019

common difference = 2nd term - 1st term

= 13 - 4

= 9

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