Answer:
0.9009
Step-by-step explanation:
Let X be the event that Current will flow
Let Y be the event that the first relay which is 1 is closed
Thus, we can say that every element of Y is in X, but X possesses more elements. Thus, Y ⊂ X.
Thus, we can say that;
P(X ∩ Y) = P(Y)
Thus, given that current flowed, the probability that relay 1 functioned will be expressed as;
P(Y | X) = (P(Y ∩ X))/P(X)
From earlier, we saw that P(X ∩ Y) = P(Y). Thus;
P(Y | X) = P(Y)/P(X)
From the question, P(Y) = 0.9
Since there are 3 relays, then we have;
P(X) = 1 - 0.1³ = 0.999
Thus;
P(Y | X) = 0.9/0.999
P(Y | X) = 0.9009
Graph is shown in attached image.
Absolute value
means whatever is inside is positive, once we resolve the inside, work out
|-5|=5
now -5=?=-5
answer is -5 since - of + is negaitve
if you don't get it still think like this
|-5|=5
mulitp;ly by -1 everybody
-|-5|=-5
17 boys to 21 girls
17 boys/21 girls
17 boys:21 girls
Answer:
10 +15-14 -21 is the answer (option 2)
Step-by-step explanation:
you use the foil method to multiply it out :)
