Find the 11th term of the arithmetic sequence 6, 9, 12, 15, . . ., a11
Manual calculation: 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36
using formula: an=a1+(n-1)d
an=a1+(n-1)d
a11=6+(11-1)3
a11=6+(10)3
a11=6+30
a11=36
Answer:
36
Step-by-step explanation:
an = a1 + (n - 1) d
a11= 6 + (11-1) 3
a11 = 6 + (10) 3
a11= 6 + 30
a11= 36
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Answers & Comments
Question:
Find the 11th term of the arithmetic sequence 6, 9, 12, 15, . . ., a11
Answer:
a11=36
How to get the answer?
Manual calculation: 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36
using formula: an=a1+(n-1)d
an=a1+(n-1)d
a11=6+(11-1)3
a11=6+(10)3
a11=6+30
a11=36
Answer:
36
Step-by-step explanation:
an = a1 + (n - 1) d
a11= 6 + (11-1) 3
a11 = 6 + (10) 3
a11= 6 + 30
a11= 36
a10 = 12 + (10-1) 12
= 12 + (9) 12
= 12 + 108
a10 = 120