lele123356
lele123356 lele123356
  • 31-10-2018
  • Mathematics
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Plzzzzz help I’ll mark brainlest thxxxx

Plzzzzz help Ill mark brainlest thxxxx class=

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wegnerkolmp2741o
wegnerkolmp2741o wegnerkolmp2741o
  • 31-10-2018

an = a1 +d(n-1)

a4 =a1+d(4-1)

-4 = -1+d(3)

add 1 to each side

-3 = 3d

d= -1

an = a1 +d(n-1)

an = -1 +-1 (n-1)

an = -1 -n +1

an = -n


Choice D


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