Indentify the Base rate and percentage. Then find the value of the unknown base rate percentage n 30% of n is 1.8 240 is n% of 400 2.4 is 30% of n 70% of n is 14.7 113 is 13% of n 28% of n is 196 35% of n is 1200 175.5 is 11% of n n is 40% of 65

< 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⭐

5x+10 is the correct one

hope this

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step-by-step explanation: