The mean number of bacteria in the single cell of a haemocytometer is 2. let
n be the number of bacteria actually observed in a cell. find:
(i) pr(n = 0)
(ii) pr(n = 3)
(iii) pr(n > 2)

Lindsay is creating a bridge out of dried pasta and glue. in her plans, she sketches the graph to determine the lengths of the noodles, in centimeters, needed for the arch to increase the length of the bridge in 1 centimeter increments.which function did lindsay use to create her design? f(x) = (x – 5)2 + 8 f(x) = –(x + 5)2 + 8 f(x) = 0.5(x + 5)2 + 8 f(x) = –0.5(x – 5)2 + 8

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

Consider circle c with angle acb measuring 3/4 radians.if minor arc ab measures 9 inches, what is the length of the radius of circle c? if necessary, round your answer to the nearest inch.