Question

The explicit rule for an arithmetic sequence is an=8.7+(-1.4)(n-1) What is the value of the 47th term? Round to the nearest tenth, if necessary.

A. –55.7
B. –26.4
C. 45.6
D. 65.8

Answer 1

A

Step-by-step explanation:

E2020

Answer 2

Answer: Option 'A' is correct.

Step-by-step explanation:

Since we have given that

The explicit rule for an arithmetic sequence is

`a_n=8.7-1.4(n-1)`

We need to find the value of 47th term,

We will put the value of n = 47

So, we get,

`a_(47)=8.7-1.4(47-1)\\\\a_(47)=8.7-1.4* 46\\\\a_(47)=8.7-64.4\\\\a_(47)=-55.7`

Hence, Option 'A' is correct.