Questions a-d are based on the following information the death rate per 100,000 for breast cancer is 25 among hormone replacement therapy (hrt) users and 15 among non-hrt users. the prevalence of hrt use in the population is 70% make the following calculations. (3 points each) the relative risk of dying for an hrt user compared to a non-user is: a b. what is the excess risk of breast cancer in those who used hrt? what is the percentage of breast cancer in the hrt users that can be attributed to hrt? what is the percentage of breast cancer in the population that can be attributed to hrt? d. 19

< 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⭐

answer

a,b, and d

explanation

a reflection angle is more than

but less than;

an angle that measures

is a reflex angle.(true)

an angle that measures less than

is acute.(true)

provided we are considering angles greater or equal to zero.

an acute angle lies in the range.

an obtuse angle is less than 180° but more than 90°

an angle that measures 300° is obtuse (false)

an angle that measures 65° is an acute angle.(true)