After being repaired, a machine functions for an exponential timewith rate λ and then
fails. Upon failure, a repair process begins. The repair processproceeds sequentially
through k distinct phases. First a phase 1 repair must beperformed, then a phase 2,
and so on. The times to complete these phases are independent, withphase i taking
an exponential time with rate μi, i = 1; ; k.

(a) What proportion of time is the machine undergoing a phase irepair?
(b) What proportion of time is the machine working?

i believe the answer is 68cm

step-by-step explanation:

i just took 34 x 2 because the space between v and y is the same as y to k.

the total estimated nappy use.=10,500,000

step-by-step explanation:

given that on an average the average baby uses 3528 napkins.

in a particular year 2014, the number of births were 299697 in new south wales.

rounding off the number of births to the nearest hundred thousand we have

no of birtsh = 300000

also rounding off the average usage to nearst thousand we get

average use of a baby = 3500

hence total number of nappy estimated to be used = 3500x300000

= 10,500,000

answer is 10,500,000 nappies

the answer is 5/14.

hope this .