SOLUTION: Find the pattern. Use the pattern to write an expression for the sum of the whole numbers from 1 to n. Then find the sum of the whole numbers from 1 to 50. The pattern is 1 mo

Algebra ->  Expressions-with-variables -> SOLUTION: Find the pattern. Use the pattern to write an expression for the sum of the whole numbers from 1 to n. Then find the sum of the whole numbers from 1 to 50. The pattern is 1 mo      Log On


   

Question 208396This question is from textbook Algebra 1
: Find the pattern. Use the pattern to write an expression for the sum of the whole numbers from 1 to n. Then find the sum of the whole numbers from 1 to 50.
The pattern is 1 more than the sum of the previous whole numbers. I don't understand how to find "n". To make an expression or formula to solve the last part. This question is from textbook Algebra 1

Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
Gauss' Formula
(n(n+1))/2 or (n^2+n)/2
The highest number in your series of 1 to n.
50(51)/2=25*51=1275