Answer:you have to multiply the two fours which equals 16 and then because there is a negative sign, your answer would be -16
Step-by-step Its an other expression to use
Answer:
Each playground will be 100 m2. Both playgrounds are 200 m2.
Step-by-step explanation:
Area of square is defined by a × a.
a = length of side. In this case a is 10 m
So, Area = 10 m × 10m
Area = 100 m2 (square meters). This is the area of one playground.
Two playgrounds will be the double, 200 m2
Answer:
No
Step-by-step explanation:
cost=25+8d
To be proportional you'd have to have no flat fee: cost=8d
1 day = $8
2 days = $16
5 days = $40
10 days = $80, etc.
I hope I helped.
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
