sheppardgirl2 sheppardgirl2
  • 18-09-2020
  • Mathematics
contestada

Find the sum of an arithmetic
9 terms; 2, 5, 8, 11....
9

Respuesta :

nwallace31 nwallace31
  • 18-09-2020

Answer:

6

Step-by-step explanation:

Answer Link
lakshmiramanan9 lakshmiramanan9
  • 18-09-2020

Answer:

126

Step-by-step explanation:

the formula for sum of arithmatic progression=n/2(2a+(n-1)d)

=9/2 (4+8*3)

=9/2*(28)

=9* 14=126

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