Answer: First Option : Sₙ= n/2(a₁ + aₙ)
Step-by-step explanation:
The nth partial sum of an arithmetic sequence or the sum of the first n terms of the arithmetic series can be defined as the sum of a finite number of term in an arithmetic sequence.
It is calculated using the formula:
Sₙ= n/2(a₁ + aₙ)
Where :
a₁ = First term
aₙ = last term
n = number of terms
Answer:
Step-by-step explanation:
7
The sum of two and the quotient of a number x and fine.
sum= +
two= 2
quotient= divide
five= 5
2+ x/5 <- should look something like this
I hope this helps!
~kaikers
4f=2500 because 4 trips from 2500 means
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