find the mentioned terms of the following sequences in A.P , (a) the fifteenth term of 18,13,8,3 and (b) the eleventh term of 4, 7.5, 11, 14.5
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Answered by
0
Answer:
-52 is the 15th term and 39 is the 11th term
Step-by-step explanation:
Answered by
5
Answer:
Step-by-step explanation:
(a)
a1=18, a2=13, a3=8,.......
d=a2-a1=a3-a2=........... =-5
a15=a1+(15-1)d
=18+14(-5)
=18-70
(a15= -52)
(b)
a1=4, a2=7.5, a3=11,.........
d=a2-a1=a3-a1=...........=3.5
a11=a1+(11-1)d
=4+10(3.5)
( a11=39)
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