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subtract 92-7. draw place-value blocks if needed . regroup if you need to . show work !

Step-by-step explanation:

That equals 85

92

-7

Take one away and add it onto the 2 so it can be 12. Then subtract 12 by 7 which is 5 then bring the 8 down.  If you need a picture I can send it

< 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 answer is b. 60. each interior angle in 120, so the exterior angle must be 60 in order to add up to 180

step-by-step explanation: