How do you do that? it does not explain

It is basically telling you to write the fraction as a decimal or the decimal as a fraction.

Step-by-step explanation:

As for number 1, it says that 1/10 is 0.1 as a fraction.

For number 2 you would turn 1/5 as a decimal. (Answer - 0.2)

For number 3, you would turn the decimal 0.25 into a fraction. (Answer - 1/4)

For number 4, you would turn 1/2 into a decimal. (Answer - 0.5)

y < -3

step-by-step explanation:

-3y - 2 > 7

-3y -2 + 2 > 7+2

-3y > 9

-3y/-3 < 9/-3   (change the inequality sign when multiplying or dividing by a negative number)

y < -3

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