Alibrarian put 33 books back on the shelves before lunch. of the books, 11 were non-fiction. what is the ratio of the number of non-fiction books to the total number of books the librarian put away before lunch?

Step-by-step explanation:

Number of non fiction books = 11

Total number of books = 33

11:33 = 1 : 3

11 goes into 33 three times.

< coa = 150 ( given)

as ba and bc are tangents

so oc and oa is perpendicular to cb and ab respectively because in circle normal passes through centre

so in quadrilateral oabc

< coa + < oab + < ocb + < abc = 360

150 +90+90 + < abc = 360

330 + < abc = 360

< abc = 360 -330 = 30

so < abc = 30

⭐dhruv⭐

the diver is 33 feet below the surface.

step-by-step explanation:

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