Choose all the expressions that are equivalent to 4x-20. x (4 - 20)
2 (2x - 10)
4(x - 20)
4(x - 5)

4(x-5)= 4x-20

so the equivalent equation is 4(x-5)

I don't actually know sorry

Step-by-step explanation:

I don't know

< 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⭐

step-by-step explanation:

goog be able to you with that maybe