A bag contains 15 marbles. The probability of randomly selecting a green marble is 1/5.The probability of randomly selecting a green marble, replacing it, and then randomly selecting a blue marble is 2/25.How many blue marbles are in the bag?

b) well because you get well

< 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⭐

mx+89b(-98)nb

step-by-step explanation: