Write an inequality to model the situation. A number exceeds 21.
n ≤ 21
n < 21
n > 21
n ≥ 21

Step-by-step explanation:

The number exceeds 21 or is greater than 21.

‘’ represents greater than.

Let the number be .

< 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

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step-by-step explanation: