For an A.p. if tn=4, n=7,d=-4 find a?
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Answer:
a = 28
Step-by-step explanation:
tn,an = 4
an = a+(n-1)d
A7 = a+(7-1)-4
4= a -24
a = 28
Answer:
tn=a+(n-1)d
4=a+(7-1)-4
4=a+(6)-4
4=a-24
4+24=a
28=a
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