Please help? This is due very soon

1) B

Step-by-step explanation:

1) You have to add up all the x values then set them equal to 195 when you solve you get 13. Then you have to plug 13 back into 7x to x= 91

how is that middle school

step-by-step explanation:

< 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⭐