angelteddy033
24.04.2020 •
Mathematics
(Computer project in Matlab) Twenty computers are connected in a network. One computer becomes infected with a virus.
Every day, this virus spreads from any infected computer to any uninfected computer with probability 0.1. Also, every
day, a computer technician takes 5 infected computers at random (or all infected computers, if their number is less
than 5) and removes the virus from them. Estimate:
(a) the expected time it takes to remove the virus from the whole network;
(b) the probability that each computer gets infected at least once?
(c) the expected number of computers that get infected.
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Ответ:
A. 8 DAYS
B. 0.8784
C. 2 COMPUTERS
Step-by-step explanation:
PLEASE CHECK ATTACHMENT FOR SOLUTION AND STEP BY STEP EXPLANATION
Ответ:
35 - x/4 = x/3
subtract x/3 from both sides
35 - x/4 - x/3= 0
need a common denominator
4 & 3 go into 12
35 - (4/12x) - (3/12x)= 0
35 - 7/12x= 0
subtract 35 from both sides
-7/12x= -35
multiply by -12/7 to eliminate fraction
(-12/7)(-7/12x) = (-35)(-12/7)
x= (-35 * -12)/7
x= 420/7
x= 60
Check:
35 - x/4 = x/3
35 - 60/4= 60/3
35 - 15= 20
20= 20
Hope this helps! :)