Step-by-step explanation:
the probability of A working is 60% or 0.6, so the probability it does not work is 40% or 0.4.
the probability of B working is 90% or 0.9, so the probability it does not work is 10% or 0.1.
plan 1
it is the probabilty that either A works, or (if it is not working) B works.
0.6 + 0.4×0.9 = 0.6 + 0.36 = 0.96
plan 2
either B works, or (if it is not working) A works
0.9 + 0.1×0.6 = 0.9 + 0.06 = 0.96
both plans have the same success probability.
Answer:
Step-by-step explanation:
m∠1>m∠2
0.041 + 0.004
= 0.045
= 45/1000
Answer:
(6, 3 1/3)
Step-by-step explanation: Split this problem into x and y parts. In x direction, the length of the AB is (8-5)=3. So 1/3 from A would be 5+1/3(8-5)=6
In y, AB goes from 6 to -2, so the coordinate changes by (-2-6)=-8 units.
1/3 along this ling will be 6 + 1/3 (-2-6)=6-2 2/3=3 1/3
