Which mathematical term describes both 19x and 4x in the expression 19x+4x? A) coefficient
B) difference
C) sum
D) term

The answers is coefficient

Step-by-step explanation:

they both have a variable attached which makes them both coefficients

idk

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⭐