sterling silver is 92.5% silver and 7.5% copper. one silver-copper alloy is 95.0% silver, and a second silver-copper alloy is 80.0% silver. how much of each sould be used in order to make 100 g of sterling silver? let the mass of the silver-copper alloy with 95.0% silver be x and the mass of the silver-copper alloy with 80.0% be y.

a

step-by-step explanation:

i get you, what you should do is think of the positive things that would come out of it. it will make yours parents proud and raise your grade. you should always try and if you can't focus tell the teacher.

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