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30-09-2021
Mathematics

contestada

What is the 85th term of the arithmetic sequence with this explicit formula?
an = 12 + (n - 1)(-3)

Respuesta :

dchoo333 dchoo333

30-09-2021

Answer:

-240

Step-by-step explanation:

You want a85.

Work it out step by step:

a85 = 12 + (85 - 1)(-3)

Subtract 1 from 85.

a85 = 12 + 84(-3)

Multiply the numbers in the brackets.

a85 = 12 + -252

Add 12.

a85 = -240

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