C) Adjacent angles whose exterior sides are perpendicular rays are complementary.
Complementary = add up to 90
Supplementary = add up to 180
7) 4
8) 22
9) 9
10) 12
Good luck!
the 2 is in the ones place. if you got that wrong then its in the tenths. but im 99 percent sure im correct with the first one.
Answer:
A. 2/9
if you divide 18 in half and devide 2 in half you get 2/9 18 shirts and only one is black leaving you with a 2/9 chance