Tuesday
March 31, 2015

Homework Help: Maths

Posted by Remy on Sunday, September 20, 2009 at 11:17am.

When the first n positive integers are added together, their sum is given by
1/2n(n+1)

Find the value of n for which the sum is 105..

Can you show me a step by step please?

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

college math - I do not understand a problem from a text book or how to solve ...
math,help - Can someone show me how step by step how to solve this problem... ...
Discrete Math - Theorem: For every integer n, if x and y are positive integers ...
arithmetic - 1. The first and last term of an A.P are, a and l respectively, ...
arithmetic - 1. The first and last term of an A.P are, a and l respectively, ...
Algebra - Find two consecutive positive integers such that the sum of the square...
Math Homework - I'm really confused on how to do this. Can someone show me step ...
math - how do i solve the sum of the first n even positive integers is h. the ...
Maths! - Find the sum of all multiples of 5 between 100 and 300 inclusive. Ans: ...
Calc 2 - Can you give me the step by step instructions on how to do this problem...

Members