Question

Find an explicit formula for the arithmetic sequence 81,54,27,0,
Note: the first term should be a(1)

Answer 1

Step-by-step explanation:

Double fertilization is a complex fertilization mechanism of flowering plants (angiosperms). This process involves the joining of a female gametophyte (megagametophyte, also called the embryo sac) with two male gametes (sperm). ... The pollen tube proceeds to release the two sperm in the megagametophyte.

Answer 2

In this case,

adding −27 to the previous term in the sequence gives the next term.

In other words,

an=a1+d(n−1) a

= a 1 + d ( n - 1 ) .

This is the formula of an arithmetic sequence.

Substitute in the values of a1=81 a 1 = 81 and d=−27 .

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