what is the arithmetic mean of 9,7,4,6,2,5,3
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Answered by
1
a= 9
d= 7-9
= -2
n=7
an = a+ (n-1) d
= 9+ (7-1) -2
= 9+ (6)-2
=9+(-12)
=-3
Answered by
0
Answer:
a=9,d=3
an=a+(n-1)d
9+"×3
9+3n-3
-6=3n
n=2
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