masroorahmeduzair03 masroorahmeduzair03
  • 21-08-2021
  • Mathematics
contestada

a=23 an= 5 n=10 find d

Respuesta :

badtestbot28 badtestbot28
  • 21-08-2021

Answer:

d=-2

Step-by-step explanation:

a10=5, a10=a+(10-1)d

5=23+9d, d=-2

Answer Link
Аноним Аноним
  • 21-08-2021

Answer:

d is -2

Step-by-step explanation:

From arithmetic progression:

[tex]{ \bf{a_{n} = a + (n - 1)d }}[/tex]

substitute:

[tex]{ \sf{5 = 23 + (10 - 1)d}} \\ { \sf{5 - 23 = 9d}} \\ { \sf{9d = - 18}} \\ { \sf{d = \frac{ - 18}{9} }} \\ \\ { \sf{d = - 2}}[/tex]

Answer Link

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