(Translate the sentence into an inequality) Twice the difference of a number and 2 is at most -30

2(x-2) ≤ -30

Step-by-step explanation:

2(twice) (x-2)( the difference of a number and 2) ≤ (is at most )-30

< 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:

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