goodcharlotte20 goodcharlotte20

12-01-2017
Mathematics

Answered

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

A1
B2
C3
D4

Verified Answer :

apologiabiology apologiabiology

12-01-2017

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

Answer Link

devonforrestvlo devonforrestvlo

15-06-2018

the answer is c on edgunity

Answer Link

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