A mathematics class consists of 55 boys and 65 girls .what is the ratio of girls to the total numbers of students? * 11:13
13:11
13:24
11:24

11:13

Step-by-step explanation:

Just simplify 55:65, by dividing by 5

< 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⭐

a reflection across the x-axis , followed by the by a reflection across the y-axis , and then a scale dilation of 0.5 .