The perimeter of a rectangle if the width is w centimeters and the length is 12cm less than twice the width

6w - 24 cm = perimeter

Step-by-step explanation:

width = w cm

length = 2w - 12 cm

perimeter = all sides added together

[w] + [w] + [2w - 12] + [2w - 12]

(combine like terms)

6w - 24 cm = perimeter

529 and 531

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