The fifth term of an arithmetic series is 9, and the sum of the first 16 terms is 480. How do you find the first three terms of the sequence?
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Answered by
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a5=9
s16=480
an=a+(n-1)d
sn=n/2{2a+(n-1)d}
find a and n
you will get the answer
s16=480
an=a+(n-1)d
sn=n/2{2a+(n-1)d}
find a and n
you will get the answer
Answered by
1
Answer: -15, -9, -3
Step-by-step explanation:
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