The height of a triangle is 2ft less than the base x. The area is 144ft2

Step-by-step explanation:

Area=1/2×b×h

144=1/2×x×(x-2)

288=x^2-2x

x^2-2x-288

x^2-18x+16x-288

x (x-18)+16(x-18)

(x+16)(x-18)=0

Therefore base is 18 as length cant be negetive.

base is 18

and hieght is 16.

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