A single repairman looks after both machines 1 and 2. Each time it is repaired, machine i stays up for an exponential time with rate λi , i = 1, 2. when machine i fails, it requires an exponentially distributed amount of time to work with rate µi to complete its repair. The repairman will always service machine 1 when it is down. For instance if machine 1 fails while machine 2 is being repaired, then the repairman will immediately stop work on machine 2 and start on 1. (i) Set up the balance equations for this problem. [9] (ii) Find the proportion of time machine 2 is down

здрасти

step-by-step explanation:

answer

the correct answer is

explanation

the given function is

the excluded values are obtained by solving:

we factor to obtain:

the excluded values are

complete the steps to find the area of the trapezoid.

area of rectangle = 256   square units

area of triangle 1 = 24  square units

area of triangle 2 = 16  square units

area of triangle 3 =   96 square units

area of trapezoid = 120  square units

step-by-step explanation:

question 1 is 8, question 2 is 9, question 3 is 24

step-by-step explanation:

now, the numbers they give you at the top are the key. from there, you just have to plug and chug! let's try 1, 2, and 3!

key: a=3, b=5, c=6

1. a+5

remember, a=3, so we plug that in to get 3+5=8

2. 15-c

c=6, so we plug that in to get 15-6=9

3. 4b

b=6, so we plug it in to get 4*6=24

time to try the rest on your own! if you put the answers below in a comment, i'll check them for you!