SOLUTION: What is the sum of a 17�term arithmetic sequence where the first term is 6 and the last term is �90?

Question 462232: What is the sum of a 17�term arithmetic sequence where the first term is 6 and the last term is �90?
Answer by math-vortex(648) (Show Source): You can put this solution on YOUR website!
What is the sum of a 17�term arithmetic sequence where the first term is 6 and the last term is �90?
=========================================
.
To find the SUM of the series we'll use

.
a[1] = the first term = 6
n = the number of terms we're interested in = 17
a[n] = the nth term; in this case, the 17th term = -90
.
To find the sum of the series we'll use,

.
hope this helps!
Ms.Figgy
math.in.the.vortex
RELATED QUESTIONS
What is the sum of a 17-term arithmetic sequence where the first term is 6 and the last... (answered by stanbon)

What is the sum of a 30�term arithmetic sequence where the first term is 73 and the last... (answered by jim_thompson5910)

The second term of a arithmetic sequence is 3 the sum is 17 ,what is the first... (answered by Edwin McCravy)

What is the common difference of a 43-term arithmetic sequence where the first term is... (answered by reviewermath)

What is the common difference of a 57-term arithmetic sequence where the first term is... (answered by josgarithmetic)

If the sum of the arithmetic sequence is 17 the second term is 3 ,the d is 14 what is the (answered by Edwin McCravy)

What is the arithmetic means between the first term a and the last term... (answered by rothauserc)

the first term of an arithmetic sequence is -5, and the twelfth term is 17 find the... (answered by ikleyn)

Give the arithmetic sequence of 5 terms if the first term is 8 and the last term is... (answered by josgarithmetic,MathTherapy)