A group of 80 Seattle school children who lacked antibody to measles (i. e., were not immune to measles) were followed for a total of 125 person-months for infection with measles. At the end of the follow-up, 10 children had acquired antibody to measles. What was the incidence rate for measles infection in this population of children per 1000 person-months, rounded to one decimal place

saving = more money

step-by-step explanation:

if you have 100 bucks, and you want to buy a candy bar, even if you have one at home, if you choose not to buy it, you save.

~courtney

arc length = 6.63311 ft.

step-by-step explanation:

the formula the arc measure is:

arc length s=2πr(c)/360

where:

c   is the central angle of the arc in degrees

r   is the radius of the arc

π   is pi, approximately 3.142

using the above formula we get

s =

thus we find that arc length of an arc for a circle of radius 20 feet and central angle 19 degrees is

6.63311 feet