Q: Find the sum of 1 9 plus 5 9 plus 2 9?

Write your answer...

Submit

Still have questions?

Continue Learning about Math & Arithmetic

Sum = 79*(79+1)/2 = 79*80/2 = 3160

The sum of the numbers given is 31. 1 + 2 + 4 + 8 + ... + 2n = 2n+1 - 1

The sum of -1 and -1 is -2.

5050

25

Related questions

Sum = 79*(79+1)/2 = 79*80/2 = 3160

if (n%2==0) sum=n/2*(n+1); else sum=(n+1)/2*n;

2

2

1+2+4 = 7

The sum of the numbers given is 31. 1 + 2 + 4 + 8 + ... + 2n = 2n+1 - 1

(xn+2-1)/(x2-1)

You add 1 plus another one and you get 2

The sum of -1 and -1 is -2.

3

3x2 + 2x + 3 + x2 + x + 1 = 4x 2+ 3x + 4

87