Sarah started collecting coins last year. She already collected 58, when she received another 21 from her parents.

She is expecting to get 12 more for her birthday next week.

How many coins is she going to have at the end of next week if her expectation is right?

91 coins

Step-by-step explanation:You add them all together the numbers which are 58 and 21 and 12.It gives you 91  coins in total.

Hope it helps :)

< 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⭐

c

step-by-step explanation: