Answer:
a^2+6a+9
Step-by-step explanation:
For there to be 1 car, we consider two possible outcomes:
The first door opened has a car or the second door opened has a car.
P(1 car) = 2/6 x 4/5 + 4/6 x 2/5
P(1 car) = 8/15
For there to be no car in either door
P(no car) = 4/6 x 3/5
P(no car) = 2/5
Probability of at least one car is the sum of the probability of one car and probability of two cars:
P(2 cars) = 2/6 x 1/5
= 1/15
P(1 car) + P(2 cars) = 8/15 + 1/15
= 3/5
Answer: t=43.25-7/1.25=29 minuets
Step-by-step explanation:
he spent $43.25. he had to pay $7 first to get in. then for each minuet had to pay 1.25.
Ok ,try putting in 4.15 x 10<span>^-6</span>
