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An arithmetic
sequence is defined
recursively by
an= an-1 - 5.5. The
first term of the
sequence is 7.5. Write
the explicit formula
for the sequence.

An arithmetic sequence is defined recursively by an an1 55 The first term of the sequence is 75 Write the explicit formula for the sequence class=

Respuesta :

Answer:

an = 7.5 - 5.5(n - 1).

Step-by-step explanation:

The common difference d = -5.5.

The first term is given as 7.5.

Explicit formula is

an = a1 + (n - 1)d

= 7.5 + (n - 1)-5.5

= 7.5 - 5.5(n - 1)

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