7th term of AP 60 and 17th tom of AP 40 find the AP and 16
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1
Answer:
16th term of AP=18
Explanation:
7th term =60
a+6d=60---------equation 1
17th term of AP =40
a+16d=40----------equation 2
equation 1-equation 2,
a+6d=60
a+16d=40
---------------
-10d=20
d= -2
put d= -2 in equation 1
a+6×-2=60
a=48
t16=a+(n-1)d
=48 +15×-2
=48-30
= 18
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0
Answer:
??
Explanation:
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