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What is the common difference between the elements of the arithmetic sequence below? -18, -22.5,-27,-31.5,-36

Respuesta :

Banabanana
a₁ = -18
a₂ = -22.5

d = a₂ - a₁
   = -22.5 - (-18)
   = -22.5 + 18
   = -4.5

Answer:

-4.5

Step-by-step explanation:

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