solve for the indicated variable in the literal equation
ax + by = c for x

x = (C-By)/A

Step-by-step explanation:

Ax + By = C

Subtract By from each side

Ax + By-By = C-By

Ax = C -By

Divide each side by A

Ax/A = (C-By)/A

x = (C-By)/A

the answer is d. 75%

< 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⭐