Solve for the answer 2.5x+(-3.57)=9.73 receive 10 points

First you had to multiply one-hundred from both sides of equation form.

Then refine.

Next add three-hundred-fifty-seven from both sides of equation form.

Then simplify.

You can also divide by two-hundred-fifty from both sides of equation form.

Finally simplify by equation.

Final answer

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-Charlie

< 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⭐