The probability a person is infected by a certain cold virus is 0.2. If a random sample of 12 people is taken, what is the probability that at least one person will be infected by
the cold virus?

a. O 0.2062
b. 0.9313
c. 0.2400
d. 0.0687

The roots of the function f(x) = x2 – 2x – 3 are shown. what is the missing number?

The serenity and the mystic are sail boats. the serenity and the mystic start at the same point and travel away from each other in opposite directions. the serenity travels at 16 mph and the mystic travels at 19 mph. how far apart will they be in 3 hours?

A+b= 17, ab=70, find the value of |a-b|