For an arithmetic sequence where a1 = 17 and the common difference is 5, find s7. a. 229 b. 235 c. 224 d. 219 show steps 11 points

C. 224

Step-by-step explanation:

Given : The first term of an arithmetic sequence =

Common difference :

We know that the sum of first n terms is given by :-

Now, for n=7 we have

i believe the correct answer is option 4.principalities were small territories that were run by russian rulers.

which statement correctly defines principalities in northern asia in the 1200s? principalities were small territories that were run by russian rulers.

hope i could ! : )