An average of 20 cars per hour arrive at the drive-in window of a fast food restaurant, where the interarrival times are exponentially distributed. Assume that the service time for each car is exponentially distributed with a mean of 2 minutes. Due to concerns about safety, the restaurant management is considering implementation of a rule to limit the queue length to three cars. (That is, if three cars are in the waiting line for service, another car cannot enter the waiting line until the queue length is 2 or fewer.) If such a rule is instituted, what is the (long-run) percentage of time that cars will be unable to enter the queue

srry idk

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second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.

image for option 4

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i just know the internet

what am i looking for finish the question.

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