Solve the following system of equations:
y = 5/4x - 2
y = -1/4x + 19

x = ? and y = ?

We will use substitution to solve this system for x.

Now, we will solve for y by pluging in what we got for x into one of the equations.

The solution is (14, 15.5).

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step-by-step explanation:

< 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⭐