9.
1) 29
2) 28
Find the 12th term of on A.P. 16,11,
1) 39
3) 71
21-39
Answers
Answered by
1
-39
Step-by-step explanation:
a =16
d =11-16 =-5
an =a+(n-1)d
a12 =16 + (12-1)5
a12 =16 + 11 × (-5)
a12 =16-55
a12 =-39
Answered by
0
Answer:
Here
a= 16
d= -5
By formula
tn = a +(n-1)×d
t12 = 16 + 12 - 1×(-5)
t12 = 16 + 11 +(-5)
t12 = 16 +(-55)
t12 = -39
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