Answer:
81 books
Step-by-step explanation:
If you divide 731 into 9 you'll get 81.2
so that means you have 2 books left over that wont be on the shelf
so you'll have to round to 81
sin (330)
-4 cot
(-45)
csc (60)
7 in 12 30 inch jasmine correct is triangle
4.6 Kilograms.
64 i hope im right