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.
..............................[a+b]2+c2
Because 0.09 is ten times as big as 0.009
Answer:
x < −17/3
Step-by-step explanation:
Put in comments if needed explanation
To find the markup, substract the price at which the car was bought from the price at which the car was sold:
To find the markup as a percentage from the original price, set 20,480 to be equal to 100%. If <em>x%</em> represents 6328, then:
To the nearest tenth, 30.898... = 30.9.
Therefore, the markup is equal to 30.9%.