At an initial examination of civil service employees, 1,950 were free of coronary heart disease. A total of 20 new cases of coronary heart disease occurred during the subsequent one-year period. Assume follow-up was complete for all civil service employees. What is the one-year cumulative incidence of coronary heart disease per 1,000 persons, rounded to one decimal place?

the solution is h=10 because you add 9 to each side of the equation.

true

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⭐

a

step-by-step explanation: