There are 7 crystalline systems.
<span>triclinic, monoclinic, orthorhombic, tetragonal, trigonal, hexagonal, and cubic.</span>
Answer:
The prevalence of the disease is 0.015
Explanation:
Mathematically,
Disease Prevalence (P) = Incidence (I) * Average duration of the disease (D)
From the question, the Incidence is 500/100,000 person-years
Duration of the disease = 3 years
Prevalence = 500/100,000 * 3 = 0.015
