It is given that 21 and 22 are supplementary.
21 and 23 are also supplementary, so
since 22 and 23 are corresponding angles, a || b.

the answer is 15% decrease

the square root of what number? if you add that, then someone will probably answer the question.

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 ! : )