SOLUTION: The sum of the first n whole numbers is given by the expression 1⁄2(n2+n) Expand the equation by multiplying, then find the sum of the first 12 whole numbers.

SOLUTION: The sum of the first n whole numbers is given by the expression 1⁄2(n2+n) Expand the equation by multiplying, then find the sum of the first 12 whole numbers.

Algebra.Com

Question 1176622: The sum of the first n whole numbers is given by the expression 1⁄2(n2+n)
Expand the equation by multiplying, then find the sum of the first 12 whole numbers.
Answer by ikleyn(52792) (Show Source): You can put this solution on YOUR website!
.


     = .


At n = 12, the sum is   = 6*13 = 78.

Solved.

RELATED QUESTIONS
Prove that the sum s of the first n natural numbers is given by the equation s = n/2... (answered by AnlytcPhil)

IF THE SQUARE OF A NUMBER IS ADDED TO THE SAME NUMBER INCREASED BY 4 THAT RESULT IS 60.... (answered by venugopalramana)

the sum of the first n terms,Sn of a series is given by Sn=2n*2/(n*n)+1,then is the... (answered by Fombitz)

Find the pattern. Use the pattern to write an expression for the sum of the whole... (answered by rfer)

There are n teams in a league and the number of games played is given by the polynomial... (answered by jorel1380)

Proof that the sums of the first N Square Numbers is given by... (answered by stanbon)

Find the value of n2 when n is 90 (answered by Alan3354)

how do i work this problem out step by step find the equivalent expression with the... (answered by richard1234)

The sum n terms is given by sn=n/2(1+n) find the fifth term of the... (answered by ewatrrr)