Answer:
(a) $54
(b) $60
(c) $30
(d) $6.3
Step-by-step explanation:
Suppose a month has 30 days. Then the expected expense for the whole month is 30 times the expected expense at each day
(a) E[F] = 30*30%*$6 = 30*0.3*6 = $54
(b) E[T] = 30*50%*$4 = 30*0.5*4 = $60
(c) E[C] = 30*4%*$25 = 30*0.04*25 = $30
(d) Suppose all events are independent, the probability that she would spend on all 3 items on the same day is
P[F+T+C] = 0.3*0.5*0.04 = 0.006
So the expected expense she would make on all 3 items is
E[F+T+C] = 30*0.006*(6+4+25) = $6.3
Answer:
From the circumference you can determine the radius. Once you have the radius, you calculate the area as πr^2
The answer will be
A=201cm^2
Step-by-step explanation:
Answer: 2.5 minutes
Step-by-step explanation: First convert feet to miles. There's 5280 feet in 1 mile, so 3300/5280=0.625 miles. Then find out how long in hours it takes to travel that far. It travels 15 miles an hour, so 0.625/15=0.0417 hours. Then convert hours to minutes by multiplying by 60. 0.0417*60=2.5 minutes.
Step-by-step explanation:
The total probability that the DeLorean makes the trip is:
P = P(engine) × P(at least 1 time circuit) × P(at least 2 capacitors)
P = P(engine) × (1 − P(0 time circuits)) × P(at least 2 capacitors)
P = 0.94 × (1 − ₄C₀ 0.75⁰ 0.25⁴) × (₃C₂ 0.8² 0.2¹ + ₃C₃ 0.8³ 0.2⁰)
P = 0.94 × (1 − 0.25⁴) × (0.384 + 0.512)
P = 0.83895
The reliability of the DeLorean is approximately 83.9%.
Answer:
(6x)*(4x^7) = (6*4)*(x*x^7) = 24*x^8
(6x)*(4x^7) = 24*x^7 is wrong in calculation of x
Hope this helps!
:)