The 12th term of an arithmetic sequence is 36, and the common difference is 3. What is the first term of the sequence? A. 1 B. 2 C. 3 D. 4

asked Dec 25, 2018 48.3k views

3 votes

The 12th term of an arithmetic sequence is 36, and the common difference is 3. What is the first term of the sequence?

A. 1
B. 2
C. 3
D. 4

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4 votes

the answer is c on edgunity

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2 votes

an=a1+d(n-1)
d=3
a12=36

a12=a1+3(12-1)
36=a1+3(11)
36=a1+33
minus 33 both sides
3=a3

C is answer

Sigug answered Dec 29, 2018

by Sigug

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