How many four-digit positive integers are multiples of 3?

  3000

Step-by-step explanation:

There are 9000 positive 4-digit numbers (all between 1000 and 9999, inclusive). 1/3 of those are multiples of 3, so there are ...

  3000 four-digit multiples of 3

i would say c is the best answer, hope it's right!

good luck! =)

cutie~

< 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⭐