155,152,149 what is the 30th term of the sequence pl hel ill make brainliest

27

Step-by-step explanation:

155 , 152 , 149

term rule = n- 3

30th term

n-3

substitute n for 30

30-3=27

68

Step-by-step explanation:

D = -3

an = a1 + (n-1)d

a30= 155 + (30-1)-3

a30 = 155 + 29(-3)

a30 = 155 + (-87)

a30 = 68

< 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⭐

justin bieber ml.