SOLUTION: Can you help with this problem using a formula? Find the sum of the even integers between -50 and 200 including them, that is, -50+(-48)+(-46)+...+198+200. Thanks.

Algebra ->  Problems-with-consecutive-odd-even-integers -> SOLUTION: Can you help with this problem using a formula? Find the sum of the even integers between -50 and 200 including them, that is, -50+(-48)+(-46)+...+198+200. Thanks.       Log On


   

Question 172042: Can you help with this problem using a formula?
Find the sum of the even integers between -50 and 200 including them, that is, -50+(-48)+(-46)+...+198+200.
Thanks.
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Can you help with this problem using a formula?
Find the sum of the even integers between -50 and 200 including them, that is, -50+(-48)+(-46)+...+198+200.
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That's a total of 126 numbers. 1 + (200 - (-50))/2 = 126
The average is (200 + (-50))/2 = 75.
So the total is 126*75 = 9,450.