Aflu outbreak occurred in a military barracks that housed 20 soldiers. case a began on october 1 and case b was diagnosed on october 2. after approximately 10 days, 12 additional cases occurred during approximately a one-week time span. military epidemiologists believed that this second group cases represented the same generations of cases, and was in the second incubation period after the occurrence of cases a and b; none of the 20 soldiers was known to be immune. calculate the secondary attack rate using the foregoing information.

a net is a diagram that shows a “flattened” view of a solid. in a net, each face and base is shown with all of its dimensions. a net can also serve as a pattern to build a three-dimensional solid.

a pyramid is a three-dimensional object with a base that is a polygon and triangular faces that meet at one vertex.

" the net of a triangular pyramid consists of four triangles. the base here we are given of the pyramid is a equilateral   triangle, and the lateral faces are also triangles "

ii6tyhj7 juj3yyj333ju jmyhthhtk7h jg hajj jiijh

answer: it's d

step-by-step explanation:

x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a