57.4 because u add all the side up and u get a answer
Answer: subtract 12-4
Step-by-step explanation:
For the range you subtract the smallest number from the biggest number so 12-4.
Answer : Probability that the pumping system will fail on any given day = 0.005
Explanation:
Probability that only older pump fail = P(A) = 0.10
Probability that only newer pump fail = P(B) = 0.05
Since they are independent events ,
then the conditions will be
P(A∩B) = P(A). P(B)
= 0.10 ×0.05
= 0.005
Hence, the probability will fail on any given day = 0.005
D D B I think this should be right
Solution:

Numerator - 4x + y = 8 + 4 = 12
Denominator - 2y - x = 8 - 2 = 6
Final Answer:
12/6 = 2