Question

Sum the numbers I through 19.

Write a paragraph on how you
obtained the sum.
I NEED HELP PLZ !!!! ASAP AND THANK YOU

Answer 1

The sum is 190.

Explanation:

This is an arithmetic series with first term 1, common difference 1 , last term 19 and containing a total of 19 terms.

Sum of n terms an = (n/2)[a1 + L] where a1 = the first term and L = the last term.

So here, a19 = (19/2)( 1 + 19)

= 9.5 * 20

= 190.