6-a man standing in a valley between two parallel mountains fires a gum and hears echo at an mterval of 2 s and
3.55. what is ;
(a) the distance between two mountains
(b) the location of the man with respect to the mountain. (speed of sound - 334 m/s)

y=1/4x-4

step-by-step explanation:

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