Albanian Use the approach in Gauss's Problem to find the following sums of arithmetic sequences
a. 1+2+3+4 + ... + 102
b. 1 + 3 + 5 + 7 + ... + 97
c. 8 + 17 +26+35+ ... + 890
d. 706 + 699 +692 +685 + ... + 6
a. The sum of the sequence is

The lines shown below are parallel. if the green line has a slope of -1, what is the slope of the red line?

What properties allow transformation to be used as a problem solving tool

(least common multiples) the answer that i had in the 1st step was lcm of airline tickets sold=72. idk if that even matters but just in case. ! three co-workers are busy selling airline tickets over the phone. in an 8-hour day, charles can sell 8 airline tickets, ann can sell 9 airline tickets, and michelle can sell 6 airline tickets. step 2 of 2: what is the smallest number of 8-hour days needed for each of them to achieve the same number of sales? it takes charles . it takes . it takes .